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-rw-r--r--mailnews/base/src/nsMsgDBView.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/mailnews/base/src/nsMsgDBView.cpp b/mailnews/base/src/nsMsgDBView.cpp
index a1867244b..6793ba95a 100644
--- a/mailnews/base/src/nsMsgDBView.cpp
+++ b/mailnews/base/src/nsMsgDBView.cpp
@@ -5255,6 +5255,7 @@ nsresult nsMsgDBView::ExpandAll()
NS_IMETHODIMP nsMsgDBView::GetThreadContainingMsgHdr(nsIMsgDBHdr *msgHdr, nsIMsgThread **pThread)
{
+ if (!m_db) return NS_ERROR_FAILURE;
return m_db->GetThreadContainingMsgHdr(msgHdr, pThread);
}