0.12.5dev: fixed showing wrongly *.po header if `[project] footer` is empty
0.12.5dev: fixed showing wrongly *.po header if `[project] footer` is empty

Closes #10967.


git-svn-id: 764b04d0c6fbbea0ee05220aef3208173ff13049@11473 af82e41b-90c4-0310-8c96-b1721e28e2e2

rbaumg/trac,rbaumg/trac,rbaumg/trac,rbaumg/trac