Fix a couple of bugs spotted by valgrind.

dlls/kernel/lcformat.c

@@ -708,7 +708,7 @@ GetDateTimeFormatA_InvalidParameter:
   if (lpStr)
   {
     if (szOut[0])
-      WideCharToMultiByte(cp, 0, szOut, -1, lpStr, cchOut, 0, 0);
+      WideCharToMultiByte(cp, 0, szOut, iRet ? -1 : cchOut, lpStr, cchOut, 0, 0);
     else if (cchOut && iRet)
       *lpStr = '\0';
   }

dlls/kernel/profile.c

@@ -1361,9 +1361,9 @@ INT WINAPI GetPrivateProfileSectionA( LPCSTR section, LPSTR buffer,
     retW = GetPrivateProfileSectionW(sectionW.Buffer, bufferW, len, filenameW.Buffer);
     if (len > 2)
     {
-        ret = WideCharToMultiByte(CP_ACP, 0, bufferW, retW + 2, buffer, len, NULL, NULL);
+        ret = WideCharToMultiByte(CP_ACP, 0, bufferW, retW + 1, buffer, len, NULL, NULL);
         if (ret > 2)
-            ret -= 2;
+            ret -= 1;
         else
         {
             ret = 0;

dlls/ntdll/tests/path.c

@@ -266,12 +266,12 @@ static void test_RtlGetFullPathName_U(void)
         pRtlMultiByteToUnicodeN(pathbufW , sizeof(pathbufW), NULL, test->path, strlen(test->path)+1 );
         ret = pRtlGetFullPathName_U( pathbufW,MAX_PATH, rbufferW, &file_part);
         ok( ret == len, "Wrong result %ld/%d for \"%s\"\n", ret, len, test->path );
-        ok(pRtlUnicodeToMultiByteN(rbufferA,MAX_PATH,&reslen,rbufferW,MAX_PATH) == STATUS_SUCCESS,
+        ok(pRtlUnicodeToMultiByteN(rbufferA,MAX_PATH,&reslen,rbufferW,(lstrlenW(rbufferW) + 1) * sizeof(WCHAR)) == STATUS_SUCCESS,
            "RtlUnicodeToMultiByteN failed\n");
         ok(lstrcmpiA(rbufferA,test->rname) == 0, "Got \"%s\" expected \"%s\"\n",rbufferA,test->rname);
         if (file_part)
         {
-            ok(pRtlUnicodeToMultiByteN(rfileA,MAX_PATH,&reslen,file_part,MAX_PATH) == STATUS_SUCCESS,
+            ok(pRtlUnicodeToMultiByteN(rfileA,MAX_PATH,&reslen,file_part,(lstrlenW(file_part) + 1) * sizeof(WCHAR)) == STATUS_SUCCESS,
                "RtlUnicodeToMultiByteN failed\n");
             ok(test->rfile && !lstrcmpiA(rfileA,test->rfile), "Got \"%s\" expected \"%s\"\n",rfileA,test->rfile);
         }

dlls/ntdll/tests/reg.c

@@ -294,7 +294,6 @@ static void test_NtCreateKey(void)
 {
     /*Create WineTest*/
     OBJECT_ATTRIBUTES attr;
-    UNICODE_STRING ValName;
     HKEY key;
     ACCESS_MASK am = GENERIC_ALL;
     NTSTATUS status;
@@ -303,7 +302,6 @@ static void test_NtCreateKey(void)
     status = pNtCreateKey(&key, am, &attr, 0, 0, 0, 0);
     ok(status == STATUS_SUCCESS, "NtCreateKey Failed: 0x%08lx\n", status);
 
-    pRtlFreeUnicodeString(&ValName);
     pNtClose(&key);
 }
 

libs/wine/debug.c

@@ -299,7 +299,7 @@ static const char *default_dbgstr_an( const char *str, int n )
         }
     }
     *dst++ = '"';
-    if (*str)
+    if (n > 0)
     {
         *dst++ = '.';
         *dst++ = '.';
@@ -352,7 +352,7 @@ static const char *default_dbgstr_wn( const WCHAR *str, int n )
         }
     }
     *dst++ = '"';
-    if (*str)
+    if (n > 0)
     {
         *dst++ = '.';
         *dst++ = '.';