From 705683b52060da6871cf87569d215b521538b41f Mon Sep 17 00:00:00 2001
From: Stefan Ginsberg <stefanginsberg@gmail.com>
Date: Fri, 31 Oct 2008 13:16:01 +0000
Subject: [PATCH] - Don't dereference inside an SEH block after doing unsafe
 writes, as this could be missed in case a pointer is bad.

svn path=/trunk/; revision=37111
---
 reactos/ntoskrnl/io/iomgr/iocomp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/reactos/ntoskrnl/io/iomgr/iocomp.c b/reactos/ntoskrnl/io/iomgr/iocomp.c
index e2cee39ee14..5c720929578 100644
--- a/reactos/ntoskrnl/io/iomgr/iocomp.c
+++ b/reactos/ntoskrnl/io/iomgr/iocomp.c
@@ -424,9 +424,6 @@ NtQueryIoCompletion(IN  HANDLE IoCompletionHandle,
             ((PIO_COMPLETION_BASIC_INFORMATION)IoCompletionInformation)->
                 Depth = KeReadStateQueue(Queue);
 
-            /* Dereference the queue */
-            ObDereferenceObject(Queue);
-
             /* Return Result Length if needed */
             if (ResultLength)
             {
@@ -439,6 +436,9 @@ NtQueryIoCompletion(IN  HANDLE IoCompletionHandle,
             Status = _SEH_GetExceptionCode();
         }
         _SEH_END;
+
+        /* Dereference the queue */
+        ObDereferenceObject(Queue);
     }
 
     /* Return Status */