use the pointer directly (#8095)

Summary: Pull Request resolved: https://github.com/facebook/rocksdb/pull/8095

Reviewed By: riversand963

Differential Revision: D27318295

Pulled By: jay-zhuang

fbshipit-source-id: a014fbd28fdd7a26648da19a766dc00d2de9fdc8

file/random_access_file_reader_test.cc

@@ -42,7 +42,7 @@ class RandomAccessFileReaderTest : public testing::Test {
     std::string fpath = Path(fname);
     std::unique_ptr<FSRandomAccessFile> f;
     ASSERT_OK(fs_->NewRandomAccessFile(fpath, opts, &f, nullptr));
-    (*reader).reset(new RandomAccessFileReader(std::move(f), fpath,
+    reader->reset(new RandomAccessFileReader(std::move(f), fpath,
                                              env_->GetSystemClock().get()));
   }