chan_lcr: Fixed automagic 's' extension and made pickup work.

Last commit by Andreas changed matching semantics to make it possible
to go directly into the dialplan _without_ dialing any digits by implicitly
dialing the 's' extension.

That is fine, if there is one to match :)

If we do not find an implicit 's' extension, we will wait for more digits
instead of hanging up immediately. (If you _really_ depended on that 'feature'
please add s => { Hangup(); } :)

Pickup: the pickup application can be used with PICKUPMARK to match
a channel, that is in RINGING state. Unfortunately, one has to explicitly
use ast_setstate() in addition to ast_queue_event() to convince asterisk
to change the channel state...

=> Pickup works now.

chan_lcr.c

@@ -703,6 +703,12 @@ static void lcr_start_pbx(struct chan_call *call, struct ast_channel *ast, int c
 		return;
 	}
 
+	if (!*ast->exten) {
+		/* if can match */
+		CDEBUG(call, ast, "There is no 's' extension (and we tried to match it implicitly). Extensions may match, if more digits are dialed.\n");
+		return;
+	}
+
 	/* if not match */
 	cause = 1;
 	release:
@@ -1495,6 +1501,7 @@ static int queue_send(void)
 					case 'R':
 						CDEBUG(call, ast, "Sending queued RINGING to Asterisk.\n");
 						ast_queue_control(ast, AST_CONTROL_RINGING);
+						ast_setstate(ast, AST_STATE_RINGING);
 						break;
 					case 'A':
 						CDEBUG(call, ast, "Sending queued ANSWER to Asterisk.\n");