From 128f3bdbbf35845ec2af59d488a7d291ea8e0ba8 Mon Sep 17 00:00:00 2001
From: "blakeross%telocity.com" <blakeross%telocity.com>
Date: Mon, 5 Mar 2001 22:09:14 +0000
Subject: [PATCH] Table crash in webmail page (70072). r=karnaze sr=attinasi

---
 layout/html/table/src/nsTableFrame.cpp | 2 +-
 layout/tables/nsTableFrame.cpp         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/layout/html/table/src/nsTableFrame.cpp b/layout/html/table/src/nsTableFrame.cpp
index f77c6dcebfe..9647c300ccb 100644
--- a/layout/html/table/src/nsTableFrame.cpp
+++ b/layout/html/table/src/nsTableFrame.cpp
@@ -4320,7 +4320,7 @@ nsTableFrame::GetFrameAtOrBefore(nsIPresContext* aPresContext,
   nsIFrame* childFrame;
   nsIFrame* lastMatchingFrame = nsnull;
   aParentFrame->FirstChild(aPresContext, nsnull, &childFrame);
-  while (childFrame != aPriorChildFrame) {
+  while (childFrame && childFrame != aPriorChildFrame) {
     childFrame->GetFrameType(&frameType);
     if (aChildType == frameType) {
       lastMatchingFrame = childFrame;
diff --git a/layout/tables/nsTableFrame.cpp b/layout/tables/nsTableFrame.cpp
index f77c6dcebfe..9647c300ccb 100644
--- a/layout/tables/nsTableFrame.cpp
+++ b/layout/tables/nsTableFrame.cpp
@@ -4320,7 +4320,7 @@ nsTableFrame::GetFrameAtOrBefore(nsIPresContext* aPresContext,
   nsIFrame* childFrame;
   nsIFrame* lastMatchingFrame = nsnull;
   aParentFrame->FirstChild(aPresContext, nsnull, &childFrame);
-  while (childFrame != aPriorChildFrame) {
+  while (childFrame && childFrame != aPriorChildFrame) {
     childFrame->GetFrameType(&frameType);
     if (aChildType == frameType) {
       lastMatchingFrame = childFrame;