another cygwin compatibility fix.

This one must be handled in a better way in configure, also for other
architectures



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@89374 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_sms.c

@@ -512,7 +512,7 @@ static void packdate(unsigned char *o, time_t w)
 	int z;
 
 	ast_localtime(&tv, &t, NULL);
-#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined( __NetBSD__ ) || defined(__APPLE__)
+#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined( __NetBSD__ ) || defined(__APPLE__) || defined(__CYGWIN__)
 	z = -t.tm_gmtoff / 60 / 15;
 #else
 	z = timezone / 60 / 15;