return string_views from forceString*

once a string has been forced we already have dynamic storage allocated for it,
so we can easily reuse that storage instead of copying.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libutil/hash.hh b/src/libutil/hash.hh
index 1b626dd85..dff46542f 100644
--- a/src/libutil/hash.hh
+++ b/src/libutil/hash.hh
@@ -107,7 +107,7 @@ public:
 };
 
 /* Helper that defaults empty hashes to the 0 hash. */
-Hash newHashAllowEmpty(std::string hashStr, std::optional<HashType> ht);
+Hash newHashAllowEmpty(std::string_view hashStr, std::optional<HashType> ht);
 
 /* Print a hash in base-16 if it's MD5, or base-32 otherwise. */
 string printHash16or32(const Hash & hash);