Fix regression where unintentional page reload was done after request abort (#1488802)

CHANGELOG

@@ -1,6 +1,7 @@
 CHANGELOG Roundcube Webmail
 ===========================
 
+- Fix regression where unintentional page reload was done after request abort (#1488802)
 - Fix excessive LFs at the end of composed message with top_posting=true (#1488797)
 - Fix bug where leading blanks were stripped from quoted lines (#1488795)
 

program/js/app.js

@@ -6145,11 +6145,6 @@ function rcube_webmail()
     else if (request.status == 0 && status != 'abort')
       this.display_message(this.get_label('servererror') + ' (No connection)', 'error');
 
-    // redirect to url specified in location header if not empty
-    var location_url = request.getResponseHeader("Location");
-    if (location_url != '')
-      this.redirect(location_url);
-
     // re-send keep-alive requests after 30 seconds
     if (action == 'keep-alive')
       setTimeout(function(){ ref.keep_alive(); ref.start_keepalive(); }, 30000);