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, 1 insertions, 1 deletions

diff --git a/third_party/nix/src/nix/log.cc b/third_party/nix/src/nix/log.cc
index 29107bbdcdff..86f133e94a7a 100644
--- a/third_party/nix/src/nix/log.cc
+++ b/third_party/nix/src/nix/log.cc
@@ -8,7 +8,7 @@
 using namespace nix;
 
 struct CmdLog : InstallableCommand {
-  CmdLog() {}
+  CmdLog() = default;
 
   std::string name() override { return "log"; }