Fixed more Win64 portability issues

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401476

src/main/win32/SDL_win32_main.c

@@ -166,7 +166,7 @@ static void __cdecl cleanup_output(void)
 /* This is where execution begins [console apps] */
 int console_main(int argc, char *argv[])
 {
-	int n;
+	size_t n;
 	char *bufp, *appname;
 	int status;