Do not use deprecated mouse wheel movement angle

apps/opencs/view/render/scenewidget.cpp

@@ -332,7 +332,7 @@ void SceneWidget::mouseMoveEvent (QMouseEvent *event)
 
 void SceneWidget::wheelEvent(QWheelEvent *event)
 {
-    mCurrentCamControl->handleMouseScrollEvent(event->delta());
+    mCurrentCamControl->handleMouseScrollEvent(event->angleDelta().y());
 }
 
 void SceneWidget::update(double dt)

apps/opencs/view/render/worldspacewidget.cpp

@@ -677,8 +677,7 @@ void CSVRender::WorldspaceWidget::wheelEvent (QWheelEvent *event)
             factor *= mDragShiftFactor;
 
         EditMode& editMode = dynamic_cast<CSVRender::EditMode&> (*mEditMode->getCurrent());
-
-        editMode.dragWheel (event->delta(), factor);
+        editMode.dragWheel (event->angleDelta().y(), factor);
     }
     else
         SceneWidget::wheelEvent(event);

apps/opencs/view/tools/reporttable.cpp

@@ -273,7 +273,7 @@ void CSVTools::ReportTable::settingChanged (const CSMPrefs::Setting *setting)
         if (key.startsWith (base))
         {
             QString modifierString = key.mid (base.size());
-            Qt::KeyboardModifiers modifiers = 0;
+            Qt::KeyboardModifiers modifiers;
 
             if (modifierString=="-s")
                 modifiers = Qt::ShiftModifier;