msvcrt: Don't forward strncmp to ntdll.

dlls/msvcrt/msvcrt.spec

@@ -1423,7 +1423,7 @@
 @ cdecl strlen(str) ntdll.strlen
 @ cdecl strncat(str str long) ntdll.strncat
 @ cdecl strncat_s(str long str long) MSVCRT_strncat_s
-@ cdecl strncmp(str str long) ntdll.strncmp
+@ cdecl strncmp(str str long) MSVCRT_strncmp
 @ cdecl strncpy(ptr str long) ntdll.strncpy
 @ cdecl strncpy_s(ptr long str long)
 @ cdecl strnlen(str long) MSVCRT_strnlen

dlls/msvcrt/string.c

@@ -1583,6 +1583,14 @@ char* __cdecl MSVCRT_strchr(const char *str, int c)
 }
 
 /*********************************************************************
+ *                  strncmp   (MSVCRT.@)
+ */
+int __cdecl MSVCRT_strncmp(const char *str1, const char *str2, MSVCRT_size_t len)
+{
+    return strncmp(str1, str2, len);
+}
+
+/*********************************************************************
  *                  _strnicmp_l   (MSVCRT.@)
  */
 int __cdecl MSVCRT__strnicmp_l(const char *s1, const char *s2,