[libvirt PATCH] scripts: avoid error in DCO check on empty branches

[Andrea Bolognani]

On Fri, 2020-03-27 at 14:41 +0000, Daniel P. Berrangé wrote:
> If the DCO check is run on an empty branch (ie one which has no commits
> different from master), it throws an error due to trying to interpret
> the empty string as a git commit SHA.
> 
> Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
> ---
>  scripts/require-dco.py | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)

Reviewed-by: Andrea Bolognani <abologna at redhat.com>

-- 
Andrea Bolognani / Red Hat / Virtualization