message: Update ASAN comment in .travis.yml
diff: @@ -35,8 +35,7 @@ matrix:
  os: osx
  compiler: clang
  - # ASAN disabled for clang < 3.8 builds per resolution of
  - # https://llvm.org/bugs/show_bug.cgi?id=22757
  + # The ASAN build in install_libcxx.sh doesn't work for versions < 4
  # clang 3.6 C++11/14 Release libc++
  - env: CLANG_VERSION=3.6 BUILD_TYPE=Release CPP=11 LIBCXX=On
  