[PATCH] D52650: [clangd] NFC: Migrate to LLVM STLExtras API where possible

[Sam McCall via Phabricator via cfe-commits]

sammccall added subscribers: ioeric, kbobyrev.
sammccall added a comment.

I think it's fine to update others too, this is a trivially-safe change and
a nice readability improvement.
No need to put everything in the same patch though.


https://reviews.llvm.org/D52650