Otherwise it won't be picked in the tarball and the build will fail.
Fixes: 533b3530c12 ("direct-to-native-GL for GLX clients on Cygwin
("Windows-DRI")") Cc: "13.0" <mesa-stable@lists.freedesktop.org> Signed-off-by: Andreas Boll <andreas.boll.dev@gmail.com> Reviewed-by: Jon Turney <jon.turney@dronecode.org.uk>