Allow statx system call.
Allow statx system call.

It is safe enough to be included and triggers an issue with Gentoo
if omitted.

Reported here: https://github.com/stoeckmann/xwallpaper/issues/35

Signed-off-by: Tobias Stoeckmann <059b8b880f8441509ec8a65b50b4c6ae74ebea76@stoeckmann.org>

stoeckmann/xwallpaper,stoeckmann/xwallpaper