From 1af0b46120a0f25387ff1871a665ae4d621fe94a Mon Sep 17 00:00:00 2001
From: James Tabor <james.tabor@reactos.org>
Date: Sun, 30 Nov 2008 23:39:20 +0000
Subject: [PATCH] - Fixed hooking bug for Firefox, a plus, new SEH found a bug!

svn path=/trunk/; revision=37783
---
 reactos/subsystems/win32/win32k/ntuser/callback.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/reactos/subsystems/win32/win32k/ntuser/callback.c b/reactos/subsystems/win32/win32k/ntuser/callback.c
index cbcdeefbcc9..fbb8ce30da4 100644
--- a/reactos/subsystems/win32/win32k/ntuser/callback.c
+++ b/reactos/subsystems/win32/win32k/ntuser/callback.c
@@ -507,13 +507,13 @@ co_IntCallHookProc(INT HookId,
    }
    _SEH2_END;
 
-   IntCbFreeMemory(Argument);
-
    if (!NT_SUCCESS(Status))
    {
       return 0;
    }
 
+   if (Argument) IntCbFreeMemory(Argument);
+
    return Result;
 }