seccomp: re-add action parse error handling
seccomp: re-add action parse error handling

This can happen when the 'errno' action can't parse its
supplied number.

Signed-off-by: Wolfgang Bumiller <bac7898f539fd233d9ce33be7a9eda13ee647930@proxmox.com>
Fixes: f67c94d00a0d ("seccomp: parse_v2_rules()")

ss1h2a3tw/lxc,caglar10ur/lxc,ss1h2a3tw/lxc,caglar10ur/lxc,ss1h2a3tw/lxc,hallyn/lxc,caglar10ur/lxc,hallyn/lxc,hallyn/lxc