Revert "Fix double painting when adding an item into a linear layout"

(It did not really fix the issue.)

This reverts commit 33f525e636ef8fa64a15d3e66c56adaea0075bda.

Conflicts:

	src/gui/graphicsview/qgraphicslinearlayout.cpp
	tests/auto/qgraphicswidget/tst_qgraphicswidget.cpp
(cherry picked from commit fee052e3e37b3335fe563cb8a1881bf59f9e25d0)

1 files changed, 1 insertions, 4 deletions

diff --git a/src/gui/graphicsview/qgraphicslinearlayout.cpp b/src/gui/graphicsview/qgraphicslinearlayout.cpp
index 1229379ee8..40f9b1de71 100644
--- a/src/gui/graphicsview/qgraphicslinearlayout.cpp
+++ b/src/gui/graphicsview/qgraphicslinearlayout.cpp
@@ -275,15 +275,12 @@ void QGraphicsLinearLayout::insertItem(int index, QGraphicsLayoutItem *item)
         qWarning("QGraphicsLinearLayout::insertItem: cannot insert itself");
         return;
     }
-
     d->addChildLayoutItem(item);
 
+    Q_ASSERT(item);
     d->fixIndex(&index);
     d->engine.insertRow(index, d->orientation);
     new QGridLayoutItem(&d->engine, item, d->gridRow(index), d->gridColumn(index), 1, 1, 0, index);
-    //the order of the following instructions is very important because
-    //invalidating the layout before adding the child item will make the layout happen
-    //before we try to paint the item
     invalidate();
 }