Fix issue in git hook script in rbtools

Review Request #7129 — Created March 28, 2015 and submitted — Latest diff uploaded




When pushing with git with the two server-side git hook scripts in rbtools/contrib/tools, a Python TypeError is raised. This is due to an incorrect function call in the get_commit_hashes function in rbtools/hooks/ Changing this call to return a list fixes the issue

I tested on my computer, by creating two local repositories, one pointing to the other one with the following configurations:
- git remote add <path_to_other_local_git_repo> to the pushing repo
- git config receive.denyCurrentBranch ignore to the receiving repo

I also installed the 2 server side hooks in contrib/tools on the pushing side.

The scripts work as intended after the fix.