Add missing `;` causing syntax error in js.php

lib/scripts/behaviour.js

@@ -228,12 +228,12 @@ var dw_behaviour = {
             // successful check will not be repeated during session
             $checkDiv.remove();
             sessionStorage.setItem('dw-security-check:' + DOKU_BASE, true);
-        }
+        };
         img.onload = function () {
             // check failed, display a warning message
             $checkDiv.html(LANG.data_insecure);
             $checkDiv.addClass('error');
-        }
+        };
         img.src = $checkDiv.data('src') + '?t=' + Date.now();
     }
 };