From 8b1f01e573dae1cf5dcd7b6c07af41ca94258626 Mon Sep 17 00:00:00 2001
From: Timur Pocheptsov <Timur.Pocheptsov@digia.com>
Date: Wed, 11 Mar 2015 15:50:42 +0100
Subject: [PATCH] Cocoa integration - invalidate backing store on geometry
 update
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Invalidate backing store in updateGeometry in case we do not flush
events (this happens if we're in setGeometry).

Change-Id: I36b9ae532a3e11620c8aba7c5e92007942260684
Task-number: QTBUG-44313
Reviewed-by: Morten Johan Sørvig <morten.sorvig@theqtcompany.com>