[issue41749] Little improve on imghdr library

[Emmanuel Arias]

Change by Emmanuel Arias <eamanu at yaerobi.com>:


----------
keywords: +patch
pull_requests: +21240
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/22166

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41749>
_______________________________________