From 197a3e6faf9258c3cc78810081f3368325045d57 Mon Sep 17 00:00:00 2001
From: Paweł Słowik <pawel.slowik@iq.pl>
Date: Mon, 03 Sep 2012 09:10:26 -0400
Subject: [PATCH] Merge branch 'master' of https://github.com/roundcube/roundcubemail

---
 program/include/rcube_imap_generic.php |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/program/include/rcube_imap_generic.php b/program/include/rcube_imap_generic.php
index 915a11a..c3cfabc 100644
--- a/program/include/rcube_imap_generic.php
+++ b/program/include/rcube_imap_generic.php
@@ -2538,7 +2538,7 @@
     {
         unset($this->data['APPENDUID']);
 
-        if (!$mailbox) {
+        if ($mailbox === null || $mailbox === '') {
             return false;
         }
 
@@ -2603,7 +2603,7 @@
     {
         unset($this->data['APPENDUID']);
 
-        if (!$mailbox) {
+        if ($mailbox === null || $mailbox === '') {
             return false;
         }
 
@@ -2612,6 +2612,7 @@
         if (file_exists(realpath($path))) {
             $in_fp = fopen($path, 'r');
         }
+
         if (!$in_fp) {
             $this->setError(self::ERROR_UNKNOWN, "Couldn't open $path for reading");
             return false;

--
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