don't release the pipe list lock twice in case of a canceled read operation

Modified: trunk/reactos/drivers/fs/np/rw.c

--- trunk/reactos/drivers/fs/np/rw.c	2006-01-17 03:25:55 UTC (rev 20931)
+++ trunk/reactos/drivers/fs/np/rw.c	2006-01-17 03:28:33 UTC (rev 20932)
@@ -182,7 +182,6 @@

 		      ThreadContext->Count++;
                       ThreadContext->DeviceExt->EmptyWaiterCount--;
 		   }

-		   KeUnlockMutex(&ThreadContext->DeviceExt->PipeListLock);

 		   break;
 		default:
 		   KEBUGCHECK(0);