[#4578] Fix NoneType errors in refresh_commit_trees and compute_diffs due to not returning the cache
Signed-off-by: Cory Johns johnsca@geek.net
Authored by: Cory Johns 2012-07-19
Committed by: Dave Brondsema 2012-07-19
Parent(s): [b4e866]
Child(ren): [981c5e]