Olivier Fourdan authored Dec 02, 2020 and Marge Bot committed Dec 03, 2020

The XIOErrorExitHandler expects (Display *, void *) whereas mutter uses
(Display *, MetaX11Display *).

That causes a warning at build time:

  warning: passing argument 2 of ‘XSetIOErrorExitHandler’ from
           incompatible pointer type [-Wincompatible-pointer-types]
    813 |   XSetIOErrorExitHandler (xdisplay, x_io_error_exit, display);

Actually, the MetaX11Display is not even used, so we can just use the
expected API and ignore the value.

Part-of: <!1621>