From d27ca98de265e38d4bc7ed0426137a91a32aa007 Mon Sep 17 00:00:00 2001
From: "dbaron%dbaron.org" <dbaron%dbaron.org>
Date: Sat, 15 Apr 2006 07:20:14 +0000
Subject: [PATCH] Null-check mBodyContent.  b=334080  r+sr=bzbarsky

---
 content/html/document/src/nsImageDocument.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/content/html/document/src/nsImageDocument.cpp b/content/html/document/src/nsImageDocument.cpp
index 5c805ab10f34..d9cee8bbe680 100644
--- a/content/html/document/src/nsImageDocument.cpp
+++ b/content/html/document/src/nsImageDocument.cpp
@@ -652,6 +652,11 @@ nsImageDocument::CheckOverflowing(PRBool changeState)
   nsRect visibleArea = context->GetVisibleArea();
 
   nsCOMPtr<nsIContent> content = do_QueryInterface(mBodyContent);
+  if (!content) {
+    NS_WARNING("no body on image document!");
+    return NS_ERROR_FAILURE;
+  }
+
   nsRefPtr<nsStyleContext> styleContext =
     context->StyleSet()->ResolveStyleFor(content, nsnull);