Bug 803665 - part 0 - make nsTimeout properly initialize its fields; r=bz

dom/base/nsGlobalWindow.cpp

@@ -533,6 +533,14 @@ private:
 NS_IMPL_ISUPPORTS2(nsGlobalWindowObserver, nsIObserver, nsIInterfaceRequestor)
 
 nsTimeout::nsTimeout()
+  : mCleared(false),
+    mRunning(false),
+    mIsInterval(false),
+    mPublicId(0),
+    mInterval(0),
+    mFiringDepth(0),
+    mNestingLevel(0),
+    mPopupState(openAllowed)
 {
 #ifdef DEBUG_jst
   {
@@ -542,8 +550,6 @@ nsTimeout::nsTimeout()
   }
 #endif
 
-  memset(this, 0, sizeof(*this));
-
   MOZ_COUNT_CTOR(nsTimeout);
 }