Skinny: Check for socket to see if listener is alive

also, use tab to indent

src/mod/endpoints/mod_skinny/mod_skinny.c

@@ -1003,6 +1003,7 @@ uint8_t listener_is_ready(listener_t *listener)
 {
 	return globals.running
 		&& listener
+		&& listener->sock
 		&& switch_test_flag(listener, LFLAG_RUNNING)
 		&& listener->profile->listener_ready;
 }

src/mod/endpoints/mod_skinny/skinny_protocol.c

@@ -148,7 +148,7 @@ switch_status_t skinny_read_packet(listener_t *listener, skinny_message_t **req)
 
     ptr = mbuf;
 
-	while (listener->sock && listener_is_ready(listener)) {
+    while (listener_is_ready(listener)) {
 	    uint8_t do_sleep = 1;
 	    if(bytes < SKINNY_MESSAGE_FIELD_SIZE) {
 		    /* We have nothing yet, get length header field */