[llvm-branch-commits] [llvm] [llvm][mustache] Use StringRef parameters (PR #159190)

[Erick Velez via llvm-branch-commits]

https://github.com/evelez7 commented:

Mega-nit but shouldn't this patch be called "Use StringRef return values"? The return value is what's being changed to a pair of `StringRef`s, not the parameters.

https://github.com/llvm/llvm-project/pull/159190