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, 9 insertions, 3 deletions

diff --git a/third_party/nix/src/libutil/compression.cc b/third_party/nix/src/libutil/compression.cc
index b025e33683..219d9046fa 100644
--- a/third_party/nix/src/libutil/compression.cc
+++ b/third_party/nix/src/libutil/compression.cc
@@ -138,7 +138,9 @@ struct BrotliDecompressionSink : ChunkedCompressionSink {
 
   BrotliDecompressionSink(Sink& nextSink) : nextSink(nextSink) {
     state = BrotliDecoderCreateInstance(nullptr, nullptr, nullptr);
-    if (!state) throw CompressionError("unable to initialize brotli decoder");
+    if (!state) {
+      throw CompressionError("unable to initialize brotli decoder");
+    }
   }
 
   ~BrotliDecompressionSink() { BrotliDecoderDestroyInstance(state); }
@@ -214,7 +216,9 @@ struct XzCompressionSink : CompressionSink {
       mt_options.check = LZMA_CHECK_CRC64;
       mt_options.threads = lzma_cputhreads();
       mt_options.block_size = 0;
-      if (mt_options.threads == 0) mt_options.threads = 1;
+      if (mt_options.threads == 0) {
+        mt_options.threads = 1;
+      }
       // FIXME: maybe use lzma_stream_encoder_mt_memusage() to control the
       // number of threads.
       ret = lzma_stream_encoder_mt(&strm, &mt_options);
@@ -322,7 +326,9 @@ struct BrotliCompressionSink : ChunkedCompressionSink {
 
   BrotliCompressionSink(Sink& nextSink) : nextSink(nextSink) {
     state = BrotliEncoderCreateInstance(nullptr, nullptr, nullptr);
-    if (!state) throw CompressionError("unable to initialise brotli encoder");
+    if (!state) {
+      throw CompressionError("unable to initialise brotli encoder");
+    }
   }
 
   ~BrotliCompressionSink() { BrotliEncoderDestroyInstance(state); }