Security update www/unit from 1.7.0 to 1.7.1.
Everybody is strongly advised to update to a new version.
*) Security: a heap memory buffer overflow might have been caused in the
router process by a specially crafted request, potentially resulting in a segmentation fault or other unspecified behavior (CVE-2019-7401).
*) Bugfix: install of Go module failed without prior building of Unit
daemon; the bug had appeared in 1.7.
Approved by: ports-secteam (joneum)