msvcrt: Add support for vsprintf_s.

dlls/msvcrt/msvcrt.spec

@@ -791,6 +791,7 @@
 @ cdecl vfwprintf(ptr wstr ptr) MSVCRT_vfwprintf
 @ cdecl vprintf(str ptr) MSVCRT_vprintf
 @ cdecl vsprintf(ptr str ptr) MSVCRT_vsprintf
+@ cdecl vsprintf_s(ptr long str ptr) MSVCRT_vsprintf_s
 @ cdecl vswprintf(ptr wstr ptr) MSVCRT_vswprintf
 @ cdecl vswprintf_s(ptr long wstr ptr) MSVCRT_vswprintf_s
 @ cdecl vwprintf(wstr ptr) MSVCRT_vwprintf

dlls/msvcrt/wcs.c

@@ -830,6 +830,14 @@ int CDECL MSVCRT_vsprintf( char *str, const char *format, __ms_va_list valist)
 }
 
 /*********************************************************************
+ *		vsprintf_s (MSVCRT.@)
+ */
+int CDECL MSVCRT_vsprintf_s( char *str, MSVCRT_size_t num, const char *format, __ms_va_list valist)
+{
+    return MSVCRT_vsnprintf(str, num, format, valist);
+}
+
+/*********************************************************************
  *		_vscprintf (MSVCRT.@)
  */
 int CDECL _vscprintf( const char *format, __ms_va_list valist )