fix 'Undefined variable' notice
fix 'Undefined variable' notice

fix for Notice: Undefined variable: is_IE in \wp-content\themes\reverie-master\lib\clean.php on line 127
milohuang/reverie,studioup/cerulean,milohuang/reverie,studioup/cerulean,shuwen/wp-hack-uchicago,studioup/cerulean,studioup/cerulean,milohuang/reverie,shuwen/wp-hack-uchicago,studioup/cerulean