Seems like depending the pillow version, the output image size could differ from one or two bytes. Now we check the expected size with a tolerance of +/- 1 byte. closes odoo/odoo#78965 X-original-commit: 42d3427975592a914b5a61aee304d499750e8afe Signed-off-by: Jérémy Kersten (jke) <jke@openerp.com>