ntoskrnl.exe: Add ObUnRegisterCallbacks stub.

dlls/ntoskrnl.exe/ntoskrnl.c

@@ -2320,6 +2320,14 @@ NTSTATUS WINAPI ObRegisterCallbacks(POB_CALLBACK_REGISTRATION *callBack, void **
 }
 
 /***********************************************************************
+ *           ObUnRegisterCallbacks (NTOSKRNL.EXE.@)
+ */
+void WINAPI ObUnRegisterCallbacks(void *handle)
+{
+    FIXME( "stub: %p\n", handle );
+}
+
+/***********************************************************************
  *           IoGetAttachedDeviceReference   (NTOSKRNL.EXE.@)
  */
 DEVICE_OBJECT* WINAPI IoGetAttachedDeviceReference( DEVICE_OBJECT *device )

dlls/ntoskrnl.exe/ntoskrnl.exe.spec

@@ -822,6 +822,7 @@
 @ stub ObSetHandleAttributes
 @ stub ObSetSecurityDescriptorInfo
 @ stub ObSetSecurityObjectByPointer
+@ stdcall ObUnRegisterCallbacks(ptr)
 @ stub PfxFindPrefix
 @ stub PfxInitialize
 @ stub PfxInsertPrefix

include/ddk/wdm.h

@@ -1433,6 +1433,7 @@ NTSTATUS  WINAPI ObRegisterCallbacks(POB_CALLBACK_REGISTRATION*, void**);
 NTSTATUS  WINAPI ObReferenceObjectByHandle(HANDLE,ACCESS_MASK,POBJECT_TYPE,KPROCESSOR_MODE,PVOID*,POBJECT_HANDLE_INFORMATION);
 NTSTATUS  WINAPI ObReferenceObjectByName(UNICODE_STRING*,ULONG,ACCESS_STATE*,ACCESS_MASK,POBJECT_TYPE,KPROCESSOR_MODE,void*,void**);
 NTSTATUS  WINAPI ObReferenceObjectByPointer(void*,ACCESS_MASK,POBJECT_TYPE,KPROCESSOR_MODE);
+void      WINAPI ObUnRegisterCallbacks(void*);
 
 POWER_STATE WINAPI PoSetPowerState(PDEVICE_OBJECT,POWER_STATE_TYPE,POWER_STATE);
 NTSTATUS  WINAPI PsCreateSystemThread(PHANDLE,ULONG,POBJECT_ATTRIBUTES,HANDLE,PCLIENT_ID,PKSTART_ROUTINE,PVOID);