[BOOT] Improve debug logging

BOOT/ENVIRON/LIB/MM/mmpa.c

@@ -139,7 +139,7 @@ Return Value:
             return STATUS_NO_MEMORY;
         }
 
-        Status = MmMdAddDescriptorToList(&MmMdlReservedAllocated, NewDescriptor, 0x00);
+        Status = MmMdAddDescriptorToList(&MmMdlReservedAllocated, NewDescriptor, 0);
         if (!NT_SUCCESS(Status)) {
             MmMdFreeDescriptor(NewDescriptor);
             return Status;