git-branch-list(drop): Support multiple branches with similar names

Previously if you had multiple branches with similar names, they could
all be deleted when deleting a single one.

For example:

    $ git branch-list
      1 a-branch-with-suffix
      2 a-branch
    $ git branch-list drop 2
    $ git branch-list
    $

Change the regex used to match branches to drop to match the whole line,
so we don't accidentally delete a branch when it has a positive partial
match.

0 files changed, 0 insertions, 0 deletions