Make sure that we release the lock on the spyee channel if the spyee or spy has hung up

(closes issue #12232)
Reported by: atis



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@109012 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_chanspy.c

@@ -250,8 +250,10 @@ static int channel_spy(struct ast_channel *chan, struct chanspy_ds *spyee_chansp
 
 	/* We now hold the channel lock on spyee */
 
-	if (ast_check_hangup(chan) || ast_check_hangup(spyee))
+	if (ast_check_hangup(chan) || ast_check_hangup(spyee)) {
+		ast_channel_unlock(spyee);
 		return 0;
+	}
 
 	name = ast_strdupa(spyee->name);
 	if (option_verbose >= 2)