[all-commits] [llvm/llvm-project] 3466b8: [Support] Add const to `FileError::getFileName`

[Ben Barham via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3466b8e23d9c1e2604bf366e208cff887070a4ff
      https://github.com/llvm/llvm-project/commit/3466b8e23d9c1e2604bf366e208cff887070a4ff
  Author: Ben Barham <ben_barham at apple.com>
  Date:   2022-03-14 (Mon, 14 Mar 2022)

  Changed paths:
    M llvm/include/llvm/Support/Error.h

  Log Message:
  -----------
  [Support] Add const to `FileError::getFileName`

`getFileName` returns a `StringRef`, there's no reason it shouldn't be
const.

Differential Revision: https://reviews.llvm.org/D121495