msvcp: Added missing casts to unsigned char in streambuf functions.

dlls/msvcp100/ios.c

@@ -978,7 +978,7 @@ int __thiscall basic_streambuf_char_sputc(basic_streambuf_char *this, char ch)
 {
     TRACE("(%p %d)\n", this, ch);
     return basic_streambuf_char__Pnavail(this) ?
-        (*basic_streambuf_char__Pninc(this) = ch) :
+        (unsigned char)(*basic_streambuf_char__Pninc(this) = ch) :
         call_basic_streambuf_char_overflow(this, (unsigned char)ch);
 }
 

dlls/msvcp60/ios.c

@@ -1409,7 +1409,7 @@ int __thiscall basic_streambuf_char_sputc(basic_streambuf_char *this, char ch)
 {
     TRACE("(%p %d)\n", this, ch);
     return basic_streambuf_char__Pnavail(this) ?
-        (*basic_streambuf_char__Pninc(this) = ch) :
+        (unsigned char)(*basic_streambuf_char__Pninc(this) = ch) :
         call_basic_streambuf_char_overflow(this, (unsigned char)ch);
 }
 
@@ -3447,7 +3447,7 @@ int __thiscall basic_stringbuf_char_overflow(basic_stringbuf_char *this, int met
                 this->seekhigh, basic_streambuf_char_epptr(&this->base));
 
     if(ptr && ptr<basic_streambuf_char_epptr(&this->base))
-        return (*basic_streambuf_char__Pninc(&this->base) = meta);
+        return (unsigned char)(*basic_streambuf_char__Pninc(&this->base) = meta);
 
     oldsize = (ptr ? basic_streambuf_char_epptr(&this->base)-basic_streambuf_char_eback(&this->base): 0);
     size = oldsize|0xf;
@@ -3484,7 +3484,7 @@ int __thiscall basic_stringbuf_char_overflow(basic_stringbuf_char *this, int met
         MSVCRT_operator_delete(ptr);
     }
 
-    return (*basic_streambuf_char__Pninc(&this->base) = meta);
+    return (unsigned char)(*basic_streambuf_char__Pninc(&this->base) = meta);
 }
 
 /* ?pbackfail@?$basic_stringbuf@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@MAEHH@Z */

dlls/msvcp71/ios.c

@@ -1451,7 +1451,7 @@ int __thiscall basic_streambuf_char_sputc(basic_streambuf_char *this, char ch)
 {
     TRACE("(%p %d)\n", this, ch);
     return basic_streambuf_char__Pnavail(this) ?
-        (*basic_streambuf_char__Pninc(this) = ch) :
+        (unsigned char)(*basic_streambuf_char__Pninc(this) = ch) :
         call_basic_streambuf_char_overflow(this, (unsigned char)ch);
 }
 
@@ -3697,7 +3697,7 @@ int __thiscall basic_stringbuf_char_overflow(basic_stringbuf_char *this, int met
                 this->seekhigh, basic_streambuf_char_epptr(&this->base));
 
     if(ptr && ptr<basic_streambuf_char_epptr(&this->base))
-        return (*basic_streambuf_char__Pninc(&this->base) = meta);
+        return (unsigned char)(*basic_streambuf_char__Pninc(&this->base) = meta);
 
     oldsize = (ptr ? basic_streambuf_char_epptr(&this->base)-basic_streambuf_char_eback(&this->base): 0);
     size = oldsize|0xf;
@@ -3734,7 +3734,7 @@ int __thiscall basic_stringbuf_char_overflow(basic_stringbuf_char *this, int met
         MSVCRT_operator_delete(ptr);
     }
 
-    return (*basic_streambuf_char__Pninc(&this->base) = meta);
+    return (unsigned char)(*basic_streambuf_char__Pninc(&this->base) = meta);
 }
 
 /* ?pbackfail@?$basic_stringbuf@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@MAEHH@Z */

dlls/msvcp80/ios.c

@@ -1406,7 +1406,7 @@ int __thiscall basic_streambuf_char_sputc(basic_streambuf_char *this, char ch)
 {
     TRACE("(%p %d)\n", this, ch);
     return basic_streambuf_char__Pnavail(this) ?
-        (*basic_streambuf_char__Pninc(this) = ch) :
+        (unsigned char)(*basic_streambuf_char__Pninc(this) = ch) :
         call_basic_streambuf_char_overflow(this, (unsigned char)ch);
 }
 
@@ -3702,7 +3702,7 @@ int __thiscall basic_stringbuf_char_overflow(basic_stringbuf_char *this, int met
                 this->seekhigh, basic_streambuf_char_epptr(&this->base));
 
     if(ptr && ptr<basic_streambuf_char_epptr(&this->base))
-        return (*basic_streambuf_char__Pninc(&this->base) = meta);
+        return (unsigned char)(*basic_streambuf_char__Pninc(&this->base) = meta);
 
     oldsize = (ptr ? basic_streambuf_char_epptr(&this->base)-basic_streambuf_char_eback(&this->base): 0);
     size = oldsize|0xf;
@@ -3739,7 +3739,7 @@ int __thiscall basic_stringbuf_char_overflow(basic_stringbuf_char *this, int met
         MSVCRT_operator_delete(ptr);
     }
 
-    return (*basic_streambuf_char__Pninc(&this->base) = meta);
+    return (unsigned char)(*basic_streambuf_char__Pninc(&this->base) = meta);
 }
 
 /* ?pbackfail@?$basic_stringbuf@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@MAEHH@Z */

dlls/msvcp90/ios.c

@@ -1406,7 +1406,7 @@ int __thiscall basic_streambuf_char_sputc(basic_streambuf_char *this, char ch)
 {
     TRACE("(%p %d)\n", this, ch);
     return basic_streambuf_char__Pnavail(this) ?
-        (*basic_streambuf_char__Pninc(this) = ch) :
+        (unsigned char)(*basic_streambuf_char__Pninc(this) = ch) :
         call_basic_streambuf_char_overflow(this, (unsigned char)ch);
 }
 
@@ -3702,7 +3702,7 @@ int __thiscall basic_stringbuf_char_overflow(basic_stringbuf_char *this, int met
                 this->seekhigh, basic_streambuf_char_epptr(&this->base));
 
     if(ptr && ptr<basic_streambuf_char_epptr(&this->base))
-        return (*basic_streambuf_char__Pninc(&this->base) = meta);
+        return (unsigned char)(*basic_streambuf_char__Pninc(&this->base) = meta);
 
     oldsize = (ptr ? basic_streambuf_char_epptr(&this->base)-basic_streambuf_char_eback(&this->base): 0);
     size = oldsize|0xf;
@@ -3739,7 +3739,7 @@ int __thiscall basic_stringbuf_char_overflow(basic_stringbuf_char *this, int met
         MSVCRT_operator_delete(ptr);
     }
 
-    return (*basic_streambuf_char__Pninc(&this->base) = meta);
+    return (unsigned char)(*basic_streambuf_char__Pninc(&this->base) = meta);
 }
 
 /* ?pbackfail@?$basic_stringbuf@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@MAEHH@Z */