Optimization which gathers stat() info when opening a file. bug 122523, r=dp@netscape.com, sr=dveditz@netscape.com

xpcom/io/nsLocalFileUnix.cpp

@@ -240,17 +240,16 @@ nsLocalFile::Clone(nsIFile **file)
 {
     CHECK_mPath();
     NS_ENSURE_ARG(file);
-
-    nsCOMPtr<nsILocalFile> localFile = new nsLocalFile();
-    if (!localFile)
-        return NS_ERROR_OUT_OF_MEMORY;
-
-    nsresult rv = localFile->InitWithPath(mPath);
-    if (NS_FAILED(rv))
-        return rv;
+    *file = nsnull;
+    
+    // Just copy-construct ourselves
+    nsCOMPtr<nsILocalFile> localFile = new nsLocalFile(*this);
+    if (localFile == NULL)
+      return NS_ERROR_OUT_OF_MEMORY;
 
     *file = localFile;
     NS_ADDREF(*file);
+        
     return NS_OK;
 }