Fixed heap-use-after-free error in compaction_job_test.cc

Summary: Fixed heap-use-after-free error in compaction_job_test.cc

Test Plan: compaction_job_test

Reviewers: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D39411

db/compaction_job_test.cc

@@ -163,11 +163,12 @@ TEST_F(CompactionJobTest, Simple) {
   LogBuffer log_buffer(InfoLogLevel::INFO_LEVEL, db_options_.info_log.get());
   mutex_.Lock();
   EventLogger event_logger(db_options_.info_log.get());
+  std::string db_name = "dbname";
   CompactionJob compaction_job(0, compaction.get(), db_options_, env_options_,
                                versions_.get(), &shutting_down_, &log_buffer,
                                nullptr, nullptr, nullptr, {}, table_cache_,
                                std::move(yield_callback), &event_logger, false,
-                               "dbname");
+                               db_name);
 
   compaction_job.Prepare();
   mutex_.Unlock();