Update MBRFilter.c

Author: yyounan

MBRFilter/MBRFilter.c

@@ -565,7 +565,7 @@ NTSTATUS DriverEntry(IN PDRIVER_OBJECT DriverObject, IN PUNICODE_STRING Registry
     DriverObject->MajorFunction[IRP_MJ_PNP]             = MBRFDispatchPnp;
 	DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL]  = MBRFDevControl;
     DriverObject->DriverExtension->AddDevice            = MBRFAddDevice;
-    DriverObject->DriverUnload                          = MBRFUnload;
+    DriverObject->DriverUnload                          = NULL;
 
     return STATUS_SUCCESS;