When the command is run on a non-bare repository, an instance of
Git is created to execute the commit, and is left open when the
command has finished.
Refactor to not use a class scope Git instance, and make sure it
gets closed before returning.
Change-Id: Ic623ae0fd8b9e264b5dfd434da0de6bb4f910984
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
9bebb1eae7