boklm authored Apr 10, 2017 and Georg Koppen committed Aug 19, 2020

In Mozilla bug 1324780, support for building with glib 2.28 (the version
available in CentOS 6) was added. However we are building on Debian
Wheezy which has glib 2.32. We fix that by backing out all glib > 2.28
code paths.