Resolve a memory leak that would occur on an invalid channel given to Action: Status

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@173848 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/manager.c

@@ -1862,6 +1862,7 @@ static int action_status(struct mansession *s, const struct message *m)
 		c = ast_get_channel_by_name_locked(name);
 		if (!c) {
 			astman_send_error(s, m, "No such channel");
+			ast_free(str);
 			return 0;
 		}
 	}