From fb8421c3ee7cbaeace3fb9db523c28da40cc6549 Mon Sep 17 00:00:00 2001
From: "bienvenu%nventure.com" <bienvenu%nventure.com>
Date: Tue, 19 Sep 2006 23:03:06 +0000
Subject: [PATCH] fix hang doing a quick search in threaded mode with a
 folder/newsgroup with corrupt threading, sr=mscott 332883

---
 mailnews/base/src/nsMsgQuickSearchDBView.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mailnews/base/src/nsMsgQuickSearchDBView.cpp b/mailnews/base/src/nsMsgQuickSearchDBView.cpp
index 674cc0e05784..c0a0645540a8 100644
--- a/mailnews/base/src/nsMsgQuickSearchDBView.cpp
+++ b/mailnews/base/src/nsMsgQuickSearchDBView.cpp
@@ -376,7 +376,11 @@ nsresult nsMsgQuickSearchDBView::GetFirstMessageHdrToDisplayInThread(nsIMsgThrea
           rv = m_db->GetMsgHdrForKey(parentId, getter_AddRefs(parent));
           if (parent)
           {
+            nsMsgKey saveParentId = parentId;
             parent->GetThreadParent(&parentId);
+            // message is it's own parent - bad, let's break out of here.
+            if (parentId == saveParentId)
+              break;
             level++;
           }
         }