Missing _XSERVER64 define caused inconsistent sizeof(XID) between the
test and hashtable code, leading to test failures on 64bit big endian
archs like s390x or ppc64.
Signed-off-by: Julien Cristau <jcristau@debian.org> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>