Bug 1453795 - DOM/Events - Initialize member fields in classes/ structures. r=smaug

--HG--
extra : amend_source : 7dfd8ea1ca8d590f7ddfbb2afe4c22d2a2c4a894

dom/events/EventStateManager.cpp

@@ -234,6 +234,8 @@ EventStateManager::EventStateManager()
   , mCurrentTarget(nullptr)
     // init d&d gesture state machine variables
   , mGestureDownPoint(0,0)
+  , mGestureModifiers(0)
+  , mGestureDownButtons(0)
   , mPresContext(nullptr)
   , mLClickCount(0)
   , mMClickCount(0)

dom/events/IMEContentObserver.cpp

@@ -198,6 +198,7 @@ NS_IMPL_CYCLE_COLLECTING_RELEASE(IMEContentObserver)
 IMEContentObserver::IMEContentObserver()
   : mESM(nullptr)
   , mIMENotificationRequests(nullptr)
+  , mPreAttrChangeLength(0)
   , mSuppressNotifications(0)
   , mPreCharacterDataChangeLength(-1)
   , mSendingNotification(NOTIFY_IME_OF_NOTHING)

dom/events/TextComposition.h

@@ -577,6 +577,7 @@ private:
 
     CompositionEventDispatcher()
       : Runnable("TextComposition::CompositionEventDispatcher")
+      , mEventMessage(eVoidEvent)
       , mIsSynthesizedEvent(false){};
   };
 

dom/events/WheelHandlingHelper.h

@@ -280,6 +280,10 @@ public:
    */
   explicit WheelDeltaHorizontalizer(WidgetWheelEvent& aWheelEvent)
     : mWheelEvent(aWheelEvent)
+    , mOldDeltaX(0.0)
+    , mOldDeltaZ(0.0)
+    , mOldOverflowDeltaX(0.0)
+    , mOldLineOrPageDeltaX(0)
     , mHorizontalized(false)
   {
   }

dom/events/XULCommandEvent.cpp

@@ -16,6 +16,7 @@ XULCommandEvent::XULCommandEvent(EventTarget* aOwner,
   : UIEvent(aOwner, aPresContext,
             aEvent ? aEvent :
                      new WidgetInputEvent(false, eVoidEvent, nullptr))
+  , mInputSource(0)
 {
   if (aEvent) {
     mEventIsInternal = false;