redirect to users page on shift cancel by admin

includes/pages/user_myshifts.php

@@ -93,7 +93,7 @@ function user_myshifts() {
       } else
         error(_("It's too late to sign yourself off the shift. If neccessary, ask the dispatcher to do so."));
     } else
-      redirect(page_link_to('user_myshifts'));
+      redirect(user_link($shifts_user));
   }
   
   redirect(page_link_to('users') . '&action=view');