timerlist: fix return from RemoteBoxSelect() when no item is choosed

Origin commit data
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Commit: 755fe81d8c
Author: vanhofen <vanhofen@gmx.de>
Date: 2018-12-16 (Sun, 16 Dec 2018)

Origin message was:
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- timerlist: fix return from RemoteBoxSelect() when no item is choosed

src/gui/timerlist.cpp

@@ -757,6 +757,9 @@ void CTimerList::RemoteBoxSelect()
 		m->enableSaveScreen();
 		m->exec(NULL, "");
 
+		if (!m->gotAction())
+			return;
+
 		delete selector;
 	}