maintainer-feedback requested: [Bug 271120] graphics/opencv: fix build with FFMPEG option enabled

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 28 Apr 2023 14:31:41 UTC
Bugzilla Automation <bugzilla@FreeBSD.org> has asked freebsd-desktop (Team)
<desktop@FreeBSD.org> for maintainer-feedback:
Bug 271120: graphics/opencv: fix build with FFMPEG option enabled
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271120