Merged revisions 221436 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

........
  r221436 | mnick | 2009-09-30 16:15:01 -0500 (Wed, 30 Sep 2009) | 2 lines
  
  Prevents from division by zero
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@221470 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_queue.c

@@ -2499,7 +2499,7 @@ static int say_periodic_announcement(struct queue_ent *qe, int ringing)
 
 	ast_verb(3, "Playing periodic announcement\n");
 	
-	if (qe->parent->randomperiodicannounce) {
+	if (qe->parent->randomperiodicannounce && qe->parent->numperiodicannounce) {
 		qe->last_periodic_announce_sound = ((unsigned long) ast_random()) % qe->parent->numperiodicannounce;
 	} else if (qe->last_periodic_announce_sound >= qe->parent->numperiodicannounce || 
 		ast_strlen_zero(qe->parent->sound_periodicannounce[qe->last_periodic_announce_sound]->str)) {