[llvm] [Support] Use malloc instead of non-throwing new (PR #92157)

[James Y Knight via llvm-commits]

https://github.com/jyknight approved this pull request.

Ugh, that's an annoying misuse of the new handler. :(

But if this is the only place it affects, this workaround SGTM (with added comment as mentioned).

https://github.com/llvm/llvm-project/pull/92157