Fix comm_path update on task switch (#1490041)

CHANGELOG

@@ -12,6 +12,7 @@ CHANGELOG Roundcube Webmail
 - Fix incorrect thumbnail rotation with GD and exif orientation data (#1490029)
 - Fix contacts list update after adding/deleting/moving a contact (#1490028, #1490033)
 - Fix handling of email addresses with quoted domain part (#1490040)
+- Fix comm_path update on task switch (#1490041)
 
 RELEASE 1.0.2
 -------------

program/include/rcmail.php

@@ -145,8 +145,13 @@ class rcmail extends rcube
         $this->task      = $task;
         $this->comm_path = $this->url(array('task' => $this->task));
 
+        if (!empty($_REQUEST['_framed'])) {
+            $this->comm_path .= '&_framed=1';
+        }
+
         if ($this->output) {
             $this->output->set_env('task', $this->task);
+            $this->output->set_env('comm_path', $this->comm_path);
         }
     }