fix file modes support check for old ruby (Tempfile.open does not return the result of block)
fix file modes support check for old ruby (Tempfile.open does not return the result of block)
mihailim/image_optim,ramiroaraujo/image_optim,toy/image_optim,toy/image_optim,ramiroaraujo/image_optim,toy/image_optim,mihailim/image_optim,ramiroaraujo/image_optim,mihailim/image_optim