app_queue: Fix CLI "queue remove member" queue_log entry.

The queue_log entry resulting from CLI "queue remove member" when
log_membername_as_agent is enabled is wrong.  It always uses the interface
name instead of the member name in the queue_log entry.

* Get the queue member before removing it from the queue so the member
name is available for the queue_log entry.

(closes issue ASTERISK-21826)
Reported by: Oscar Esteve
Patches:
      fix_membername.diff (license #6505) patch uploaded by Oscar Esteve
         (modified to fix potential ref leak)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@401433 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_queue.c

@@ -9135,6 +9135,7 @@ static char *handle_queue_remove_member(struct ast_cli_entry *e, int cmd, struct
 {
 	const char *queuename, *interface;
 	struct member *mem = NULL;
+	char *res = CLI_FAILURE;
 
 	switch (cmd) {
 	case CLI_INIT:
@@ -9156,36 +9157,39 @@ static char *handle_queue_remove_member(struct ast_cli_entry *e, int cmd, struct
 	queuename = a->argv[5];
 	interface = a->argv[3];
 
+	if (log_membername_as_agent) {
+		mem = find_member_by_queuename_and_interface(queuename, interface);
+	}
+
 	switch (remove_from_queue(queuename, interface)) {
 	case RES_OKAY:
-		if (log_membername_as_agent) {
-			mem = find_member_by_queuename_and_interface(queuename, interface);
-		}
 		if (!mem || ast_strlen_zero(mem->membername)) {
 			ast_queue_log(queuename, "CLI", interface, "REMOVEMEMBER", "%s", "");
 		} else {
 			ast_queue_log(queuename, "CLI", mem->membername, "REMOVEMEMBER", "%s", "");
 		}
-		if (mem) {
-			ao2_ref(mem, -1);
-		}
 		ast_cli(a->fd, "Removed interface %s from queue '%s'\n", interface, queuename);
-		return CLI_SUCCESS;
+		res = CLI_SUCCESS;
+		break;
 	case RES_EXISTS:
 		ast_cli(a->fd, "Unable to remove interface '%s' from queue '%s': Not there\n", interface, queuename);
-		return CLI_FAILURE;
+		break;
 	case RES_NOSUCHQUEUE:
 		ast_cli(a->fd, "Unable to remove interface from queue '%s': No such queue\n", queuename);
-		return CLI_FAILURE;
+		break;
 	case RES_OUTOFMEMORY:
 		ast_cli(a->fd, "Out of memory\n");
-		return CLI_FAILURE;
+		break;
 	case RES_NOT_DYNAMIC:
 		ast_cli(a->fd, "Unable to remove interface '%s' from queue '%s': Member is not dynamic\n", interface, queuename);
-		return CLI_FAILURE;
-	default:
-		return CLI_FAILURE;
+		break;
 	}
+
+	if (mem) {
+		ao2_ref(mem, -1);
+	}
+
+	return res;
 }
 
 static char *complete_queue_pause_member(const char *line, const char *word, int pos, int state)