fix crash when using the ParkAndAnnounce application. When using this application,

there will be no peer channel to play the parking announcement to. (issue #6756)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@13961 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_features.c

@@ -362,7 +362,7 @@ int ast_park_call(struct ast_channel *chan, struct ast_channel *peer, int timeou
 		"Timeout: %ld\r\n"
 		"CallerID: %s\r\n"
 		"CallerIDName: %s\r\n"
-		,pu->parkingnum, pu->chan->name, peer->name
+		,pu->parkingnum, pu->chan->name, peer ? peer->name : ""
 		,(long)pu->start.tv_sec + (long)(pu->parkingtime/1000) - (long)time(NULL)
 		,(pu->chan->cid.cid_num ? pu->chan->cid.cid_num : "<unknown>")
 		,(pu->chan->cid.cid_name ? pu->chan->cid.cid_name : "<unknown>")