sdl12-compat: SDL_win32_main.c: put back isspace() macro again :

SDL Commits
1 
From 4e4527a123fb99a1677055d89c5fc74323ddc4d8 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Thu, 25 Nov 2021 23:11:50 +0300
Subject: [PATCH] SDL_win32_main.c: put back isspace() macro again :

because HAVE_CTYPE_H is not defined for windows here.  used a short
version of SDL_isspace instead (like the original macro for wince.)
---
 src/SDLmain/win32/SDL_win32_main.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/SDLmain/win32/SDL_win32_main.c b/src/SDLmain/win32/SDL_win32_main.c
index fd7fdfd..99ded4e 100644
--- a/src/SDLmain/win32/SDL_win32_main.c
+++ b/src/SDLmain/win32/SDL_win32_main.c
@@ -26,6 +26,9 @@
 #define STDOUT_FILE	"stdout.txt"
 #define STDERR_FILE	"stderr.txt"
 
+#undef SDL_isspace
+#define SDL_isspace(a) ((a) == ' ' || (a) == '\t')
+
 /* Set a variable to tell if the stdio redirect has been enabled. */
 static int stdioRedirectEnabled = 0;
 
@@ -63,7 +66,7 @@ static int ParseCommandLine(char *cmdline, char **argv)
 	argc = last_argc = 0;
 	for ( bufp = cmdline; *bufp; ) {
 		/* Skip leading whitespace */
-		while ( isspace(*bufp) ) {
+		while ( SDL_isspace(*bufp) ) {
 			++bufp;
 		}
 		/* Skip over argument */
@@ -88,7 +91,7 @@ static int ParseCommandLine(char *cmdline, char **argv)
 				++argc;
 			}
 			/* Skip over word */
-			while ( *bufp && ! isspace(*bufp) ) {
+			while ( *bufp && ! SDL_isspace(*bufp) ) {
 				++bufp;
 			}
 		}