[PATCH v3 0/2] libX11: check size of GetReqExtra after XFlush

[Kees Cook]

Thanks for the feedback! I've split the patch into the two halves and
updated return values, etc. I'm not too familiar with the "Data" API,
so I left things as-is for the time-being. If the second patch isn't
right, hopefully the first is still useful. :)

Thanks,

-Kees