Merge remote-tracking branch 'origin/master'

db/vlog_set.cpp

@@ -103,7 +103,6 @@ VlogSet::~VlogSet() {
     vlog_file_handler.flush();
     vlog_file_handler.close();
 
-    // FIXME: SIGSEGV
     std::cout << "vlog_set.cpp line 102" << std::endl;
     vlog_handler->vlog_latch_.hard_unlock();
   }