style(3p/nix): Add braces around single-line conditionals r/771

These were not caught by the previous clang-tidy invocation, but were
instead sorted out using amber[0] as such:

    ambr --regex 'if (\(.+\))\s([a-z].*;)' 'if $1 { $2 }'

[0]: https://github.com/dalance/amber

1 files changed, 6 insertions, 2 deletions

diff --git a/third_party/nix/src/nix/add-to-store.cc b/third_party/nix/src/nix/add-to-store.cc
index cc85cc02ea..b7fda9c9d3 100644
--- a/third_party/nix/src/nix/add-to-store.cc
+++ b/third_party/nix/src/nix/add-to-store.cc
@@ -27,7 +27,9 @@ struct CmdAddToStore : MixDryRun, StoreCommand {
   Examples examples() override { return {}; }
 
   void run(ref<Store> store) override {
-    if (!namePart) namePart = baseNameOf(path);
+    if (!namePart) {
+      namePart = baseNameOf(path);
+    }
 
     StringSink sink;
     dumpPath(path, sink);
@@ -38,7 +40,9 @@ struct CmdAddToStore : MixDryRun, StoreCommand {
     info.path = store->makeFixedOutputPath(true, info.narHash, *namePart);
     info.ca = makeFixedOutputCA(true, info.narHash);
 
-    if (!dryRun) store->addToStore(info, sink.s);
+    if (!dryRun) {
+      store->addToStore(info, sink.s);
+    }
 
     std::cout << fmt("%s\n", info.path);
   }