Fix possible PHP warning, read default_folders using config->get() to suppo...

Aleksander Machniak

2012-08-21 fe2f0be4352ba0bc213a2c6d4dfcbbddea1a551c

 program/include/rcube_cache.php

@@ -254,7 +254,7 @@
            }
            else if ($this->type == 'apc') {
                $data = apc_fetch($this->ckey($key));
           }
            }

            if ($data) {
                $md5sum = md5($data);
@@ -294,7 +294,7 @@
                }

                $this->cache[$key]      = $data;
               $this->cache_sums[$key] = $md5sum;
                $this->cache_sums[$key] = $md5sum;
            }
            else {
                $this->cache[$key] = null;