edquota: Don't pass fd for temporary file to editor.

The editor opens the temporary file by name.
Import pf_print_state.c 1.54 from OpenBSD

Original log:
pfctl -ss printed state levels for ICMPv6. Disable this the same
way it has already been done for ICMPv4.

Difference with OpenBSD:
- WITHOUT_INET6 safe

Obtained from:	OpenBSD