Fix a port without flavored PKGNAMESUFFIX.

[00:03:36] Warning: (net/nsscache@py35): Error: Duplicated origin for nsscache-0.39: net/nsscache@py35 AND net/nsscache. Rerun with -v to see which ports are depending on these.
[00:03:36] Warning: (net/nsscache@py38): Error: Duplicated origin for nsscache-0.39: net/nsscache@py38 AND net/nsscache. Rerun with -v to see which ports are depending on these.
[00:03:36] Warning: (net/nsscache@py36): Error: Duplicated origin for nsscache-0.39: net/nsscache@py36 AND net/nsscache. Rerun with -v to see which ports are depending on these.

Pointy hat: kbowling