[llvm] [llvm][Support] Add quotes around option name (PR #81784)

[David Blaikie via llvm-commits]

dwblaikie wrote:

Oh, sorry, I see it's a report_fatal_error - just thought it was a normal error message, not an assert/fatal/library-misuse. Sometimes we test those (like llvm::Error has tests to ensure it assert-fails in the right places/ways) but for one that's only reachable through a custom binary, not sure it'll be worth the hassle. Appreciate you looking into it, though - maybe there's a way that's not so bad.

https://github.com/llvm/llvm-project/pull/81784