refactor(multi_object_tracker): use const reference in loop and simplify tracker update logic

Signed-off-by: Taekjin LEE <taekjin.lee@tier4.jp>

Author: technolojin

perception/autoware_multi_object_tracker/src/debugger/debug_object.cpp

@@ -140,7 +140,7 @@ void TrackerObjectDebugger::process()
   if (object_data_list_.empty()) return;
 
   // update uuid_int
-  for (auto & object_data : object_data_list_) {
+  for (const auto & object_data : object_data_list_) {
     current_ids_.insert(uuidToInt(object_data.uuid));
   }
 

perception/autoware_multi_object_tracker/src/processor/processor.cpp

@@ -111,7 +111,7 @@ void TrackerProcessor::spawn(
       new_object.channel_index, new_object.existence_probability);
 
     // Update the tracker with the new object
-    if (tracker) list_tracker_.push_back(tracker);
+    list_tracker_.push_back(tracker);
   }
 }