The event_methods hash is statically generated and should not be freed.

src/event_handler_class_cleanup.c

@@ -31,7 +31,7 @@ TR__eventHandlerClassCleanup(TR_class_ptr class)
 	while (class) {
 		struct c_TR_EventHandler_vars * vars;
 		vars = (struct c_TR_EventHandler_vars *)class->vars;
-		TR_delete(vars->event_methods);
+		TR_hashCleanup(vars->event_methods);
 		class = class->parent;
 	}
 }