Guard against flickableItem being null when scrolling

Fixes error from qmlplugindump:

ScrollViewHelper.qml:147: TypeError: Cannot read property 'originX' of null

Change-Id: I1bef74acda8fb4e1850967c4d684ece7d458699b
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/controls/Private/ScrollViewHelper.qml b/src/controls/Private/ScrollViewHelper.qml
index 4f1d59f0..3f309bb0 100644
--- a/src/controls/Private/ScrollViewHelper.qml
+++ b/src/controls/Private/ScrollViewHelper.qml
@@ -143,7 +143,7 @@ Item {
             }
         }
         onValueChanged: {
-            if (!blockUpdates) {
+            if (flickableItem && !blockUpdates) {
                 flickableItem.contentX = value + flickableItem.originX
             }
         }