refactor(3p/nix): Apply clang-tidy's modernize-* fixes r/787

This applies the modernization fixes listed here:

https://clang.llvm.org/extra/clang-tidy/checks/list.html

The 'modernize-use-trailing-return-type' fix was excluded due to my
personal preference (more specifically, I think the 'auto' keyword is
misleading in that position).

1 files changed, 2 insertions, 1 deletions

diff --git a/third_party/nix/src/libstore/nar-accessor.cc b/third_party/nix/src/libstore/nar-accessor.cc
index ffbf7c1a89d5..ac286374b8bd 100644
--- a/third_party/nix/src/libstore/nar-accessor.cc
+++ b/third_party/nix/src/libstore/nar-accessor.cc
@@ -4,6 +4,7 @@
 #include <map>
 #include <nlohmann/json.hpp>
 #include <stack>
+#include <utility>
 
 #include "archive.hh"
 #include "json.hh"
@@ -99,7 +100,7 @@ struct NarAccessor : public FSAccessor {
   }
 
   NarAccessor(const std::string& listing, GetNarBytes getNarBytes)
-      : getNarBytes(getNarBytes) {
+      : getNarBytes(std::move(getNarBytes)) {
     using json = nlohmann::json;
 
     std::function<void(NarMember&, json&)> recurse;