Windows-specific warning patrol. No bug, r=themaid

--HG--
extra : rebase_source : c0f13210632a661bdeb560e397a24476e754816d

js/src/jscntxt.cpp

@@ -970,7 +970,7 @@ JSContext::JSContext(JSRuntime *rt)
     stack(thisDuringConstruction()),  /* depends on cx->thread_ */
     parseMapPool_(NULL),
     globalObject(NULL),
-    sharpObjectMap(this),
+    sharpObjectMap(thisDuringConstruction()),
     argumentFormatMap(NULL),
     lastMessage(NULL),
     errorReporter(NULL),

js/src/jsiter.cpp

@@ -1031,7 +1031,7 @@ SuppressDeletedPropertyHelper(JSContext *cx, JSObject *obj, StringPredicate pred
                          * Invoke the write barrier on this element, since it's
                          * no longer going to be marked.
                          */
-                        ni->props_end->HeapPtr<JSFlatString>::~HeapPtr<JSFlatString>();
+                        ni->props_end->HeapPtr<JSFlatString>::~HeapPtr();
                     }
 
                     /* Don't reuse modified native iterators. */