Add 'down' as a valid state for directed call pickup. This creeps up when we receive session progress when dialing a device and not ringing.

(closes issue #14005)
Reported by: ddl


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@162341 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_directed_pickup.c

@@ -83,7 +83,7 @@ static int pickup_do(struct ast_channel *chan, struct ast_channel *target)
 /* Helper function that determines whether a channel is capable of being picked up */
 static int can_pickup(struct ast_channel *chan)
 {
-	if (!chan->pbx && (chan->_state == AST_STATE_RINGING || chan->_state == AST_STATE_RING))
+	if (!chan->pbx && (chan->_state == AST_STATE_RINGING || chan->_state == AST_STATE_RING || chan->_state == AST_STATE_DOWN))
 		return 1;
 	else
 		return 0;