msvcrt: Use ismbcodepage instead of mb_cur_max in mbcodepage dependent functions.

dlls/msvcrt/locale.c

@@ -44,6 +44,7 @@ MSVCRT__locale_t MSVCRT_locale = NULL;
 int MSVCRT___lc_codepage = 0;
 int MSVCRT___lc_collate_cp = 0;
 LCID MSVCRT___lc_handle[MSVCRT_LC_MAX - MSVCRT_LC_MIN + 1] = { 0 };
+int MSVCRT___mb_cur_max = 1;
 static unsigned char charmax = CHAR_MAX;
 
 /* MT */
@@ -209,7 +210,7 @@ find_best_locale_proc(HMODULE hModule, LPCSTR type, LPCSTR name, WORD LangID, LO
 extern int atoi(const char *);
 
 /* Internal: Find the LCID for a locale specification */
-static LCID MSVCRT_locale_to_LCID(const char *locale)
+LCID MSVCRT_locale_to_LCID(const char *locale)
 {
     LCID lcid;
     locale_search_t search;

dlls/msvcrt/msvcrt.h

@@ -140,8 +140,8 @@ typedef struct MSVCRT_threadmbcinfostruct {
     int ismbcodepage;
     int mblcid;
     unsigned short mbulinfo[6];
-    char mbctype[257];
-    char mbcasemap[256];
+    unsigned char mbctype[257];
+    unsigned char mbcasemap[256];
 } MSVCRT_threadmbcinfo;
 
 typedef struct MSVCRT_threadlocaleinfostruct *MSVCRT_pthreadlocinfo;
@@ -197,9 +197,10 @@ typedef struct __thread_data thread_data_t;
 
 extern thread_data_t *msvcrt_get_thread_data(void);
 
+LCID MSVCRT_locale_to_LCID(const char *);
+extern MSVCRT__locale_t MSVCRT_locale;
 extern int MSVCRT___lc_codepage;
 extern int MSVCRT___lc_collate_cp;
-extern int MSVCRT___mb_cur_max;
 extern WORD MSVCRT__ctype [257];
 extern unsigned short *MSVCRT__pctype;
 

dlls/msvcrt/tests/string.c

@@ -1993,8 +1993,7 @@ static void test_wctob(void)
 
     _setmbcp(1250);
     ret = p_wctob(0x81);
-    /* wctob should not be affected by _setmbcp */
-    todo_wine ok(ret == EOF, "ret = %x\n", ret);
+    ok(ret == EOF, "ret = %x\n", ret);
 
     setlocale(LC_ALL, "C");
     ret = p_wctob(0x8141);