Bug 656991 - Fix leak in nsStructuredCloneContainer::InitFromVariant. r=bz,igor

dom/base/nsStructuredCloneContainer.cpp

@@ -97,6 +97,7 @@ nsStructuredCloneContainer::InitFromVariant(nsIVariant *aData, JSContext *aCx)
   if (!mData) {
     mSize = 0;
     mVersion = 0;
+    free(jsBytes);
     return NS_ERROR_FAILURE;
   }
   else {
@@ -104,6 +105,7 @@ nsStructuredCloneContainer::InitFromVariant(nsIVariant *aData, JSContext *aCx)
   }
 
   memcpy(mData, jsBytes, mSize);
+  free(jsBytes);
   return NS_OK;
 }