Also set up gmtoff (this is used in the %z gnu extension to strftime)

Reported and fixed by jcmoore
Closes issue #11002


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@85921 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/stdtime/localtime.c

@@ -1133,6 +1133,7 @@ static struct tm *localsub(const time_t *timep, const long offset, struct tm *tm
 	*/
 	result = timesub(&t, ttisp->tt_gmtoff, sp, tmp);
 	tmp->tm_isdst = ttisp->tt_isdst;
+	tmp->tm_gmtoff = ttisp->tt_gmtoff;
 #ifdef TM_ZONE
 	tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind];
 #endif /* defined TM_ZONE */