Fix an unused variable in non-developer-warning mode.

diff --git a/src/Traffic/TrafficMgr.cxx b/src/Traffic/TrafficMgr.cxx
index eeda08ac63b8a19fa405325221a38aa2dcbffc3f..2fe014091e95425f98fb5fd25402dedfda1aa56b 100644 (file)
--- a/src/Traffic/TrafficMgr.cxx
+++ b/src/Traffic/TrafficMgr.cxx
@@ -583,9 +583,9 @@ void FGTrafficManager::finishInit()
     assert(doingInit);
     SG_LOG(SG_AI, SG_INFO, "finishing AI-Traffic init");
     loadHeuristics();
-
+#if defined(ENABLE_DEV_WARNINGS)
     PerformanceDB* perfDB = globals->get_subsystem<PerformanceDB>();
-    
+#endif
     // Do sorting and scoring separately, to take advantage of the "homeport" variable
     BOOST_FOREACH(FGAISchedule* schedule, scheduledAircraft) {
         schedule->setScore();