Bug 1453795 - XPConnect - Initialize member fields in classes/ structures. r=peterv

--HG--
extra : rebase_source : b996be8c8e2a7fea85f12c986644948360b47821

js/xpconnect/loader/ChromeScriptLoader.cpp

@@ -49,6 +49,8 @@ public:
       , mGlobalObject(aGlobal)
       , mPromise(aPromise)
       , mCharset(aOptions.mCharset)
+      , mToken(nullptr)
+      , mScriptLength(0)
     {
         mOptions.setNoScriptRval(!aOptions.mHasReturnValue)
                 .setCanLazilyParse(aOptions.mLazilyParse)

js/xpconnect/src/BackstagePass.h

@@ -41,7 +41,7 @@ public:
   void SetGlobalObject(JSObject* global);
 
   explicit BackstagePass(nsIPrincipal* prin) :
-    mPrincipal(prin)
+    mPrincipal(prin), mWrapper(nullptr)
   {
   }
 

js/xpconnect/src/XPCCallContext.cpp

@@ -34,7 +34,12 @@ XPCCallContext::XPCCallContext(JSContext* cx,
         mJSContext(cx),
         mWrapper(nullptr),
         mTearOff(nullptr),
-        mName(cx)
+        mMember(nullptr),
+        mName(cx),
+        mStaticMemberIsLocal(false),
+        mArgc(0),
+        mArgv(nullptr),
+        mRetVal(nullptr)
 {
     MOZ_ASSERT(cx);
     MOZ_ASSERT(cx == nsContentUtils::GetCurrentJSContext());

js/xpconnect/src/xpcprivate.h

@@ -295,10 +295,8 @@ class XPCRootSetElem
 public:
     XPCRootSetElem()
     {
-#ifdef DEBUG
         mNext = nullptr;
         mSelfp = nullptr;
-#endif
     }
 
     ~XPCRootSetElem()