Fix initial test in git_repo_info helper.
Fix initial test in git_repo_info helper.

Using && doesn't work here -- in the second assignment
the local variable: repo is nil.

Examples:

  This doesn't work:

  >> a = 1 && b = a + a
  NoMethodError: You have a nil object when you didn't expect it!

  This does:

  >> a = 1 and b = a + a
  => 2

concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse,concord-consortium/rigse