improve share dir delete

plugins/Common.php

@@ -222,6 +222,9 @@ Class Common {
         $dirs_after_delete = $friends_dirs;
         if (in_array($share_dir, $friends_dirs)) {
             $dirs_after_delete = array_diff($friends_dirs, array($share_dir));
+            if (is_object($dirs_after_delete)) {
+                $dirs_after_delete = self::dictToArray($dirs_after_delete);
+            }
         }else {
             return true;
         }