Bug 1735952 part 1: Support QueryInterface to IAccessibleValue for RemoteAccessible. r=morgan

Differential Revision: https://phabricator.services.mozilla.com/D128560

accessible/windows/ia2/ia2AccessibleValue.cpp

@@ -34,7 +34,7 @@ ia2AccessibleValue::QueryInterface(REFIID iid, void** ppv) {
   *ppv = nullptr;
 
   if (IID_IAccessibleValue == iid) {
-    AccessibleWrap* valueAcc = LocalAcc();
+    Accessible* valueAcc = Acc();
     if (valueAcc && valueAcc->HasNumericValue()) {
       RefPtr<IAccessibleValue> result = this;
       result.forget(ppv);

accessible/windows/msaa/MsaaAccessible.cpp

@@ -865,7 +865,7 @@ MsaaAccessible::QueryInterface(REFIID iid, void** ppv) {
     if (SUCCEEDED(hr)) return hr;
   }
 
-  if (!*ppv && localAcc) {
+  if (!*ppv) {
     HRESULT hr = ia2AccessibleValue::QueryInterface(iid, ppv);
     if (SUCCEEDED(hr)) return hr;
   }