Don't recreate header and footer unnecessarily

The only time that they need to be recreated is if the orientation
changes (even then, a good implementation could handle it, but no
point requiring that now).

Task-number: QTBUG-40375
Change-Id: Id0215fb812724827bb139cda8f8dc6208c703852
Reviewed-by: Andrew den Exter <andrew.den.exter@qinetic.com.au>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/quick/items/qquicklistview.cpp b/src/quick/items/qquicklistview.cpp
index c496eab3c5..e5b9f9cf59 100644
--- a/src/quick/items/qquicklistview.cpp
+++ b/src/quick/items/qquicklistview.cpp
@@ -2070,7 +2070,7 @@ void QQuickListView::setOrientation(QQuickListView::Orientation orientation)
             setFlickableDirection(HorizontalFlick);
             setContentY(0);
         }
-        d->regenerate();
+        d->regenerate(true);
         emit orientationChanged();
     }
 }