Undefined index: distribution_name in drupal_install_profile_distribution_name

Jumped the gun a bit on this one, the profile was missing. But maybe this is still a bug, close if you want

After an upgrade form Drupal 7.7 to 7.8 this notice shows up:

Notice: Undefined index: distribution_name in drupal_install_profile_distribution_name() (line 202 of /includes/install.inc).

I am using a custom Install profile that obviously doesn't have a "distribution_name".
Just needs a check to for the index and default to "Drupal" as intended.