pkg/58967: sysutils/podman fails to build on netbsd-9

[campbell+netbsd%mumble.net@localhost]

>Number:         58967
>Category:       pkg
>Synopsis:       sysutils/podman fails to build on netbsd-9
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jan 07 03:30:00 +0000 2025
>Originator:     Taylor R Campbell
>Release:        netbsd-9, pkgsrc-2024Q4
>Organization:
The EnvBSD Podmanagement
>Environment:
>Description:
===> Building for podman-5.0.3nb4
env: unknown option -- u
Usage: env [-i] [name=value ...] [command]
env: unknown option -- u
Usage: env [-i] [name=value ...] [command]
Makefile:190: *** Required variable NATIVE_GOOS value is undefined, whitespace, or empty.  Stop.

>How-To-Repeat:
build sysutils/podman
>Fix:
Yes, please!

Probably need to patch the makefile to avoid the neologism of `env -u', e.g. by using shell `unset' instead.