Make simpler check if overlay is shrinked
Make simpler check if overlay is shrinked

ovuline/MTStatusBarOverlay,hlung/MTStatusBarOverlay,JinlianWang/MTStatusBarOverlay,Haraguroicha/MTStatusBarOverlay,Slepter/MTStatusBarOverlay,PocketScientists/MTStatusBarOverlay,coneybeare/MTStatusBarOverlay,myell0w/MTStatusBarOverlay