From c7126fe6580248591fa5b4f5e00c19621c3222e5 Mon Sep 17 00:00:00 2001
From: "timeless@mozdev.org" <timeless@mozdev.org>
Date: Wed, 27 Apr 2011 10:35:11 +0200
Subject: [PATCH] Bug 633240 nsIMIMEService.getTypeFromFile(null) crashes [@
 nsExternalHelperAppService::GetTypeFromFile(nsIFile*, nsACString_internal&) ]
 r=biesi

--HG--
extra : rebase_source : 7b0903e9907d993251a4dae1615f35399e99ca96
---
 uriloader/exthandler/nsExternalHelperAppService.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/uriloader/exthandler/nsExternalHelperAppService.cpp b/uriloader/exthandler/nsExternalHelperAppService.cpp
index 0d93a06204c5..f0e14bc98df3 100644
--- a/uriloader/exthandler/nsExternalHelperAppService.cpp
+++ b/uriloader/exthandler/nsExternalHelperAppService.cpp
@@ -2858,6 +2858,7 @@ NS_IMETHODIMP nsExternalHelperAppService::GetTypeFromURI(nsIURI *aURI, nsACStrin
 
 NS_IMETHODIMP nsExternalHelperAppService::GetTypeFromFile(nsIFile* aFile, nsACString& aContentType)
 {
+  NS_ENSURE_ARG_POINTER(aFile);
   nsresult rv;
   nsCOMPtr<nsIMIMEInfo> info;