Fix crash in HistoryWidget::mousePressEvent.

When the mouse was over edit / reply and the history was closed,
mouse click handler still tried to jump to the message. Now we
update the mouse over state each time the history changes.

Telegram/SourceFiles/historywidget.cpp

@@ -1826,6 +1826,8 @@ void HistoryWidget::showHistory(const PeerId &peerId, MsgId showAtMsgId, bool re
 		doneShow();
 	}
 
+	updateOverStates(mapFromGlobal(QCursor::pos()));
+
 	if (App::wnd()) QTimer::singleShot(0, App::wnd(), SLOT(setInnerFocus()));
 
 	App::main()->dlgUpdated(wasHistory ? wasHistory->peer : nullptr, wasMsgId);