tst_QGestureRecognizer: port away from Q_FOREACH

The single use of Q_FOREACH in this test is safe to port 1:1 to a
ranged for-loop, since we're in a constructor, and the loop body only
calls member functions of data members (incl. the base class), so we
cannot possibly modify the container passed in as a constructor
argument: any connections or event processing that could re-enter our
caller hasn't been set up, yet.

Task-number: QTBUG-115803
Change-Id: I7095aef1edddbda0d1b0c471192b18acd6fd1793
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

tests/auto/widgets/kernel/qgesturerecognizer/tst_qgesturerecognizer.cpp

@@ -71,7 +71,7 @@ TestWidget::TestWidget(const GestureTypeVector &gestureTypes)
 {
     setAttribute(Qt::WA_AcceptTouchEvents);
 
-    foreach (Qt::GestureType gestureType, gestureTypes) {
+    for (Qt::GestureType gestureType : gestureTypes) {
         grabGesture(gestureType);
         m_receivedGestures.insert(gestureType, false);
     }