mds: return sv for efficiency

This is a trivial refactor.

Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>

diff --git a/src/mds/cephfs_features.cc b/src/mds/cephfs_features.cc
index d458fe8f345e8164f678a0505bbcba715b4b74c3..09c9c010399e973dac103c30b63f194990051513 100644 (file)
--- a/src/mds/cephfs_features.cc
+++ b/src/mds/cephfs_features.cc
@@ -29,7 +29,7 @@ static_assert(feature_names.size() == CEPHFS_FEATURE_MAX + 1);
 std::string_view cephfs_feature_name(size_t id)
 {
   if (id > feature_names.size())
-    return "unknown";
+    return "unknown"sv;
   return feature_names[id];
 }