Fix some warnings in manual tests

Fix:
gestures.cpp:46:16: warning: this statement may fall through [-Wimplicit-fallthrough=]
gestures.cpp:47:5: note: here
gestures.cpp:48:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
gestures.cpp:52:5: note: here
main.cpp: In function 'QByteArray windowsVersionToString(QSysInfo::WinVersion)':
main.cpp:40:12: warning: enumeration value 'WV_CE' not handled in switch [-Wswitch]
...

main.cpp: In function 'QByteArray macVersionToString(QSysInfo::MacVersion)':
main.cpp:68:12: warning: enumeration value 'MV_10_12' not handled in switch [-Wswitch]
...

widget.cpp: In member function 'CustomItem* Widget::checkedItem() const':
widget.cpp:238:12: warning: 'item' may be used uninitialized in this function [-Wmaybe-uninitialized]

Change-Id: I434784e86d127e56b92663cb45eba7d60d8f8eaf
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/manual/gestures/graphicsview/gestures.cpp b/tests/manual/gestures/graphicsview/gestures.cpp
index cc0ff3e1aa..6e5b07bf18 100644
--- a/tests/manual/gestures/graphicsview/gestures.cpp
+++ b/tests/manual/gestures/graphicsview/gestures.cpp
@@ -44,11 +44,13 @@ QGestureRecognizer::Result ThreeFingerSlideGestureRecognizer::recognize(QGesture
     switch (event->type()) {
     case QEvent::TouchBegin:
         result = QGestureRecognizer::MayBeGesture;
+        break;
     case QEvent::TouchEnd:
         if (d->gestureFired)
             result = QGestureRecognizer::FinishGesture;
         else
             result = QGestureRecognizer::CancelGesture;
+        break;
     case QEvent::TouchUpdate:
         if (d->state() != Qt::NoGesture) {
             QTouchEvent *ev = static_cast<QTouchEvent*>(event);