QScroller auto-test is flakey

  Testing tst_QScroller
  FAIL!  : tst_QScroller::scroll() Compared values are not the same
     Actual   (sw->receivedFirst): 0
     Expected (true): 1
  .\tst_qscroller.cpp(196) : failure location
  FAIL!  : tst_QScroller::scroll() Compared values are not the same
  .\tst_qscroller.cpp(404) : failure location
  Totals: 6 passed, 2 failed, 0 skipped
  QtQA::App::TestRunner: test failed, running again to see if it is flaky...
  ********* Start testing of tst_QScroller *********
  Config: Using QTest library 5.1.0, Qt 5.1.0
  PASS   : tst_QScroller::initTestCase()
  QWARN  : tst_QScroller::staticScrollers() QScroller::scroller() was called with a null target.
  PASS   : tst_QScroller::staticScrollers()
  PASS   : tst_QScroller::scrollerProperties()
  PASS   : tst_QScroller::scrollTo()
  QWARN  : tst_QScroller::scroll() QGestureManager::deliverEvent: could not find the target for gesture
  FAIL!  : tst_QScroller::scroll() Compared values are not the same
     Actual   (sw->receivedFirst): 0
     Expected (true): 1
  .\tst_qscroller.cpp(196) : failure location
  FAIL!  : tst_QScroller::scroll() Compared values are not the same
  .\tst_qscroller.cpp(404) : failure location
  QWARN  : tst_QScroller::overshoot() QGestureManager::deliverEvent: could not find the target for gesture
  QWARN  : tst_QScroller::overshoot() QGestureManager::deliverEvent: could not find the target for gesture
  QWARN  : tst_QScroller::overshoot() QGestureManager::deliverEvent: could not find the target for gesture
  QWARN  : tst_QScroller::overshoot() QGestureManager::deliverEvent: could not find the target for gesture
  PASS   : tst_QScroller::overshoot()
  PASS   : tst_QScroller::cleanupTestCase()
  Totals: 6 passed, 2 failed, 0 skipped
  ********* Finished testing of tst_QScroller *********
  QtQA::App::TestRunner: test failure could be reproduced twice consecutively
  QtQA::App::TestRunner: end tst_qscroller: 6 seconds, exit code 2