[PATCH] D53158: [buildbot, windows] Update the way the visual studio environment is set

[Stella Stamenova via Phabricator via llvm-commits]

stella.stamenova added a comment.

This defaults to the original behavior when vswhere.exe doesn't exist (so older versions of Visual Studio).


Repository:
  rL LLVM

https://reviews.llvm.org/D53158