fixup! fs: add c++ fast path for writeFileSync utf8

Author: CanadaHonk

benchmark/fs/bench-writeFileSync.js

@@ -8,7 +8,8 @@ tmpdir.refresh();
 const bench = common.createBenchmark(main, {
   encoding: ['utf8'],
   hasFileDescriptor: ['true', 'false'],
-  stringLength: [1024, 4096, 65535],//, 1024 * 1024],
+  stringLength: [1024, 4096, 65535],
+  // stringLength: [1024, 4096, 65535, 1024 * 1024],
   n: [1e3],
 });
 

src/node_file.cc

@@ -2537,7 +2537,6 @@ static void WriteFileUtf8(const FunctionCallbackInfo<Value>& args) {
   FS_SYNC_TRACE_END(write);
 }
 
-
 /*
  * Wrapper for read(2).
  *