parseContentAddressMethodPrefix: use string_view
parseContentAddressMethodPrefix: use string_view

Co-authored-by: John Ericson <46f1a0bd5592a2f9244ca321b129902a06b53e03@JohnEricson.me>
NixOS/nix,rycee/nix,rycee/nix,NixOS/nix,NixOS/nix,rycee/nix,rycee/nix,NixOS/nix,rycee/nix,NixOS/nix