From c01bf6830cdaed48d084d4ab2691f2f8e9c0b102 Mon Sep 17 00:00:00 2001
From: "peterlubczynski%netscape.com" <peterlubczynski%netscape.com>
Date: Mon, 19 Mar 2001 23:01:59 +0000
Subject: [PATCH] Fix for null docShell in nsEventStateManager::UpdateCursor.
 Fixing AIM Express top crash. bug 69589 r=saari sr=attinasi

---
 content/events/src/nsEventStateManager.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/content/events/src/nsEventStateManager.cpp b/content/events/src/nsEventStateManager.cpp
index d91537d1135a..837d44127df0 100644
--- a/content/events/src/nsEventStateManager.cpp
+++ b/content/events/src/nsEventStateManager.cpp
@@ -1518,6 +1518,7 @@ nsEventStateManager::UpdateCursor(nsIPresContext* aPresContext, nsEvent* aEvent,
   nsCOMPtr<nsISupports> pcContainer;
   aPresContext->GetContainer(getter_AddRefs(pcContainer));    
   nsCOMPtr<nsIDocShell> docShell(do_QueryInterface(pcContainer));    
+  if (!docShell) return;
   PRUint32 busyFlags = nsIDocShell::BUSY_FLAGS_NONE;
   docShell->GetBusyFlags(&busyFlags);