From 53ea579cb6ac847d1a49b2535f731ff4df415c95 Mon Sep 17 00:00:00 2001
From: "rpotts%netscape.com" <rpotts%netscape.com>
Date: Wed, 16 Jun 1999 09:50:30 +0000
Subject: [PATCH] Added an if check around the call out through the event
 sink...

---
 netwerk/protocol/http/src/nsHTTPResponseListener.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/netwerk/protocol/http/src/nsHTTPResponseListener.cpp b/netwerk/protocol/http/src/nsHTTPResponseListener.cpp
index e13158acd0b7..dc8a952c36b6 100644
--- a/netwerk/protocol/http/src/nsHTTPResponseListener.cpp
+++ b/netwerk/protocol/http/src/nsHTTPResponseListener.cpp
@@ -281,7 +281,9 @@ nsresult nsHTTPResponseListener::FireOnHeadersAvailable(nsISupports* aContext)
         // Notify the event sink that response headers are available...
         nsIHTTPEventSink* pSink= nsnull;
         m_pConnection->GetEventSink(&pSink);
-        pSink->OnHeadersAvailable(aContext);
+        if (pSink) {
+            pSink->OnHeadersAvailable(aContext);
+        }
 
         // Check for any modules that want to receive headers once they've arrived.
         NS_WITH_SERVICE(nsINetModuleMgr, pNetModuleMgr, kNetModuleMgrCID, &rv);