further FIPS patch
(from https://github.com/openSUSE/firefox-maintenance/commit/23d322af9566055af016e6e409dcc3c9856c3666)
<?xml version="1.0" encoding="UTF-8"?>
<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
<mime-type type="application/x-xpinstall">
<comment xml:lang="en">Mozilla Cross-Platform Installer Module</comment>
<glob pattern="*.xpi" />
</mime-type>
</mime-info>