From 14e71ac217c1feb46e62883dae89ec914aa2849b Mon Sep 17 00:00:00 2001
From: Boris Zbarsky <bzbarsky@mit.edu>
Date: Mon, 26 Apr 2010 16:27:01 -0400
Subject: [PATCH] Bug 559618.  Treat negative max-age values as 0.  r=jduell

---
 netwerk/protocol/http/src/nsHttpResponseHead.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/netwerk/protocol/http/src/nsHttpResponseHead.cpp b/netwerk/protocol/http/src/nsHttpResponseHead.cpp
index 451d90ec8072..7d98708275a9 100644
--- a/netwerk/protocol/http/src/nsHttpResponseHead.cpp
+++ b/netwerk/protocol/http/src/nsHttpResponseHead.cpp
@@ -534,7 +534,10 @@ nsHttpResponseHead::GetMaxAgeValue(PRUint32 *result)
     if (!p)
         return NS_ERROR_NOT_AVAILABLE;
 
-    *result = (PRUint32) atoi(p + 8);
+    int maxAgeValue = atoi(p + 8);
+    if (maxAgeValue < 0)
+        maxAgeValue = 0;
+    *result = PRUint32(maxAgeValue);
     return NS_OK;
 }