Index: res/parking/parking_bridge.c
===================================================================
--- res/parking/parking_bridge.c	(revision 391701)
+++ res/parking/parking_bridge.c	(working copy)
@@ -68,6 +68,9 @@
 	ao2_cleanup(pu->lot);
 	pu->lot = NULL;
 
+	ao2_cleanup(pu->retriever);
+	pu->retriever = NULL;
+
 	ao2_cleanup(pu->parker);
 	pu->parker = NULL;
 }
Index: main/parking.c
===================================================================
--- main/parking.c	(revision 391701)
+++ main/parking.c	(working copy)
@@ -80,6 +80,7 @@
 
 	ao2_cleanup(park_obj->parkee);
 	ao2_cleanup(park_obj->parker);
+	ao2_cleanup(park_obj->retriever);
 	ast_string_field_free_memory(park_obj);
 }