Fix check for PTE removal flag

xtoskrnl/mm/alloc.cc

@@ -818,7 +818,7 @@ MM::Allocator::FreeNonPagedPoolPages(IN PVOID VirtualAddress,
                 PageFrameNumber = MM::Paging::GetPageFrameNumber(PointerPte);
                 Pfn = MM::Pfn::GetPfnEntry(PageFrameNumber);
 
-                /* Clear PFN shared count and mark the PFN as deleted */
+                /* Clear PFN shared count and mark the PFN as ready for removal */
                 Pfn->u2.ShareCount = 0;
                 Pfn->PteAddress = (PMMPTE)((ULONG_PTR)Pfn->PteAddress | 0x1);
 

xtoskrnl/mm/pfn.cc

@@ -185,7 +185,7 @@ MM::Pfn::DecrementReferenceCount(IN PMMPFN PageFrameNumber,
     }
 
     /* Check if the PTE is marked as being ready for removal */
-    if(MM::Paging::GetPte(PageFrameNumber->PteAddress) & 0x1)
+    if((ULONG_PTR)PageFrameNumber->PteAddress & 0x1)
     {
         /* Check the page's cache attribute */
         if((PageFrameNumber->u3.e1.CacheAttribute != PfnCached) &&