[PATCH 0/2] silence clang-3.6 warnings

I was fooling around with clang-3.6 today (as opposed to 3.5, which is
the stock "clang" shipped with Debian), and noticed two new warnings.
The first one is a real bug, and the second is just a cleanup (though I
agree with clang on it).

  [1/2]: read_and_strip_branch: fix typo'd address-of operator
  [2/2]: do not check truth value of flex arrays

-Peff