[PATCH] ignore --disable-free in clang when leak detection is enabled

[Sergey Matveev]

  > Does LSan have an LD_PRELOAD mode that works without ASan?

  Ugh. We have a source file that builds into such a library (lsan/tests/lsan_testlib.cc) but we don't support it officially. It actually turns into a fork bomb if you have symbolization enabled.

  Regardless of whether we want to support that mode in LSan, I wouldn't bother supporting it here. I don't think anyone is ever going to need that.

http://llvm-reviews.chandlerc.com/D2475