Actually run test__git_date_str()
Actually run test__git_date_str()

We'd forgotten the @wvtest annotation.

Signed-off-by: Rob Browning <1dc5917c2adeeba13d1ef33dbb40691a1b67cc65@defaultvalue.org>
Tested-by: Rob Browning <1dc5917c2adeeba13d1ef33dbb40691a1b67cc65@defaultvalue.org>

ToxicFrog/bup,ToxicFrog/bup,ToxicFrog/bup,ToxicFrog/bup,ToxicFrog/bup