[PATCH] D61269: [CommandLine] Change help output to prefix long options with `--` instead of `-`. NFC . Part 3 of 5

[Don Hinton via Phabricator via llvm-commits]

hintonda updated this revision to Diff 197232.
hintonda added a comment.

- Fix dashes for help on error.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D61269/new/

https://reviews.llvm.org/D61269

Files:
  llvm/lib/Support/CommandLine.cpp

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