Changed the check on walking through the format string to use it's size instead of find the '\0' char, this allows format string with embedded '\0' chars.

sqstdlib/sqstdstring.cpp

@@ -70,11 +70,12 @@ SQRESULT sqstd_format(HSQUIRRELVM v,SQInteger nformatstringidx,SQInteger *outlen
 	const SQChar *format;
 	SQChar *dest;
 	SQChar fmt[MAX_FORMAT_LEN];
-	sq_getstring(v,nformatstringidx,&format);
-	SQInteger allocated = (sq_getsize(v,nformatstringidx)+2)*sizeof(SQChar);
+	sq_getstring(v,nformatstringidx,&format);
+	SQInteger format_size = sq_getsize(v,nformatstringidx);
+	SQInteger allocated = (format_size+2)*sizeof(SQChar);
 	dest = sq_getscratchpad(v,allocated);
 	SQInteger n = 0,i = 0, nparam = nformatstringidx+1, w = 0;
-	while(format[n] != '\0') {
+	while(n < format_size) {
 		if(format[n] != '%') {
 			assert(i < allocated);
 			dest[i++] = format[n];