[all-commits] [llvm/llvm-project] 09fc77: [NFC][tests] Replace use of GNUisms in usage of diff

[Hubert Tong via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 09fc7796e57417071523c82bdac8b3bf050648a0
      https://github.com/llvm/llvm-project/commit/09fc7796e57417071523c82bdac8b3bf050648a0
  Author: Hubert Tong <hubert.reinterpretcast at gmail.com>
  Date:   2020-11-08 (Sun, 08 Nov 2020)

  Changed paths:
    M clang/test/APINotes/yaml-roundtrip-2.test
    M clang/test/APINotes/yaml-roundtrip.test

  Log Message:
  -----------
  [NFC][tests] Replace use of GNUisms in usage of diff

... the POSIX options suffice.

This maintains compatibility with the system `diff` on platforms
like AIX.