MFH: r427461

update databases/postgis22 to 2.2.4

also, fixes build when older version is installed[1]

PR: 214906, 211203 [1]
Reported by: robert.kruus@utoronto.ca [1]
Approved by: rhurlin@gwdg.de (maintainer), rene (mentor)

Approved by: ports-secteam (junovitch)