fix compilation

Author: nathanhhughes

hydra_ros/src/hydra_ros_pipeline.cpp

@@ -161,7 +161,8 @@ void HydraRosPipeline::stop() {
 void HydraRosPipeline::initLCD() {
   // TODO(nathan) push to pipeline config?
   auto lcd_config = config::fromContext<LoopClosureConfig>();
-  lcd_config.detector.num_semantic_classes = GlobalInfo::instance().getTotalLabels();
+  lcd_config.detector.num_semantic_classes =
+      GlobalInfo::instance().labelspace().total_labels;
   LOG_IF(INFO, config.verbosity >= 2)
       << "Number of classes for LCD: " << lcd_config.detector.num_semantic_classes;