[PATCH][libcxx] scan-build fixes in tests

[Marshall Clow]

On Oct 17, 2014, at 6:24 PM, Steve MacKenzie <stevemac321 at live.com> wrote:

> I am about half-way through running the libc++ tests with scan-build.  I thought it good to submit a patch now for review for feedback rather than later.

Thanks! 

This has been on my to-do list for quite a while.  (along with running all the tests through clang-tidy)

— Marshall