Fix build on head and 10.1


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@370272 35697150-7ecd-e111-bb59-0022644237b5
Fix a regression that made some plist errors non fatal

Reported by:	antoine


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@370273 35697150-7ecd-e111-bb59-0022644237b5