maintainer-feedback requested: [Bug 269197] lang/ruby31: Add upstream patch to fix bug of mkmf library

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 28 Jan 2023 05:48:39 UTC
Bugzilla Automation <bugzilla@FreeBSD.org> has asked freebsd-ruby (Nobody)
<ruby@FreeBSD.org> for maintainer-feedback:
Bug 269197: lang/ruby31: Add upstream patch to fix bug of mkmf library
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=269197



--- Description ---
Add upstream patch to fix bug of mkmf library.

There is bug in mkmf library of Ruby 3.1 that it fails to detect pkg-config
command if it isn't installed in environment that Ruby is built, and it causes
build error of some ports when default version of Ruby is 3.1. So add upstream
patch to fix it.

Reference:	https://bugs.ruby-lang.org/issues/19189