[libc++] Fix style again

Should've ran `git clang-format HEAD~2` instead.

Author: tinnamchoi

libcxx/test/benchmarks/filesystem.bench.cpp

@@ -173,7 +173,7 @@ BENCHMARK_CAPTURE(BM_LexicallyNormal, large_path, getRandomPaths, /*PathLen*/ 32
 
 template <class GenInput>
 void BM_LexicallyRelative(benchmark::State& st, GenInput gen, size_t PathLen) {
-  auto BasePath = gen(st.range(0), PathLen);
+  auto BasePath   = gen(st.range(0), PathLen);
   auto TargetPath = gen(st.range(0), PathLen);
   benchmark::DoNotOptimize(&BasePath);
   benchmark::DoNotOptimize(&TargetPath);