This backports a patch from gtk+ upstream to prevent an issue when
building on Fedora 23 hosts.
(From OE-Core rev: fd27f8620ae4d95dfe07b27eee4256b0a128348a)
Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>