Changed safe_snprintf() prototype to match snprintf() - missing const.

src/xpdev/genwrap.c

@@ -67,7 +67,7 @@
 /****************************************************************************/
 /* Used to replace snprintf()  guarantees to terminate.			  			*/
 /****************************************************************************/
-int DLLCALL safe_snprintf(char *dst, size_t size, char *fmt, ...)
+int DLLCALL safe_snprintf(char *dst, size_t size, const char *fmt, ...)
 {
 	va_list argptr;
 	int     numchars;

src/xpdev/genwrap.h

@@ -272,7 +272,7 @@ extern "C" {
 DLLEXPORT int		DLLCALL	xp_random(int);
 DLLEXPORT char*		DLLCALL os_version(char *str);
 DLLEXPORT char*		DLLCALL	lastchar(const char* str);
-DLLEXPORT int		DLLCALL safe_snprintf(char *dst, size_t size, char *fmt, ...);
+DLLEXPORT int		DLLCALL safe_snprintf(char *dst, size_t size, const char *fmt, ...);
 
 #if defined(_WIN32)
 #define		msclock()	clock()