Fix compaction_job_stats under ROCKSDB_LITE

Summary: Fix compaction_job_stats under ROCKSDB_LITE

Test Plan: compile using ROCKSDB_LITE

Reviewers: yhchiang, igor, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D46887

util/compaction_job_stats_impl.cc

@@ -73,6 +73,8 @@ void CompactionJobStats::Add(const CompactionJobStats& stats) {
 
 void CompactionJobStats::Reset() {}
 
+void CompactionJobStats::Add(const CompactionJobStats& stats) {}
+
 #endif  // !ROCKSDB_LITE
 
 }  // namespace rocksdb