From 56babc3f58359aeab2fe5c4c3a45e21695482b36 Mon Sep 17 00:00:00 2001
From: "pete%alphanumerica.com"
 <pete%alphanumerica.com@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Sat, 7 Sep 2002 02:00:31 +0000
Subject: [PATCH] b=121489, r=dougt, sr=bzbarsky

Simple fix for nsIFile GetParent to return null when already at the top of the volume
Thanks guys for the speedy review.

--pete


git-svn-id: svn://10.0.0.236/trunk@129027 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/xpcom/io/nsLocalFileUnix.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mozilla/xpcom/io/nsLocalFileUnix.cpp b/mozilla/xpcom/io/nsLocalFileUnix.cpp
index 8dfb846c9c2..dee8fa85d8b 100644
--- a/mozilla/xpcom/io/nsLocalFileUnix.cpp
+++ b/mozilla/xpcom/io/nsLocalFileUnix.cpp
@@ -1164,6 +1164,10 @@ nsLocalFile::GetParent(nsIFile **aParent)
     NS_ENSURE_ARG_POINTER(aParent);
     *aParent       = nsnull;
 
+    // if '/' we are at the top of the volume, return null
+    if (mPath.Equals("/"))
+        return  NS_OK;
+ 
     // <brendan, after jband> I promise to play nice
     char *buffer   = NS_CONST_CAST(char *, mPath.get()),
          *slashp   = buffer;