[CorProfiler] Invoke newly exposed IGCHeap apis

Author: mdh1418

src/coreclr/vm/proftoeeinterfaceimpl.cpp

@@ -7662,14 +7662,16 @@ HRESULT ProfToEEInterfaceImpl::EnumerateGCHeapObjects(object_callback callback,
         ThreadSuspend::SuspendEE(ThreadSuspend::SUSPEND_REASON::SUSPEND_FOR_PROFILER);
     }
 
+    IGCHeap *hp = GCHeapUtilities::GetGCHeap();
     // Prepare to walk the GC Heap by fixing allocation contexts
+    hp->FixAllocContexts(FALSE);
 
     // Walk the GC Heap
-    IGCHeap *hp = GCHeapUtilities::GetGCHeap();
     unsigned max_generation = hp->GetMaxGeneration();
     hp->DiagWalkHeap((walk_fn)callback, callbackState, max_generation, TRUE);
 
     // Repair the allocation contexts that were fixed before walking the GC Heap
+    hp->RepairAllocContexts(TRUE);
 
     // ResumeEE
     ThreadSuspend::RestartEE(FALSE /* bFinishedGC */, TRUE /* SuspendSucceeded */);