A single choice on a ballot has this format:
#1 [ ] This or that
The regexp in uvvote.pl's process_vote() will
match and extract what's beetwen "[" and "]".
But if "This or that" contains a "]", the
match will be too greedy:
#1 [ ] This [or that]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^ <- match
Fix that by using a non-greedy operator.
Signed-off-by: Thomas Hochstein <thh@thh.name>