Fix failing linter test

See https://travis-ci.org/phpmyadmin/phpmyadmin/jobs/398682628#L732

Line change was introduced with 9d08a1dcaf

Signed-off-by: Isaac Bennetch <bennetch@gmail.com>

js/common.js

@@ -157,4 +157,4 @@ var PMA_commonActions = {
             .remove();
         AJAX._callback = callback;
     }
-};
+};