main/config: Clean config maps on shutdown.

ASTERISK-25700 #close

Change-Id: I096da84f9c62c6095f68bcf98eac4b7c7868e808

main/config.c

@@ -3378,6 +3378,8 @@ static void config_shutdown(void)
 
 	ast_cli_unregister_multiple(cli_config, ARRAY_LEN(cli_config));
 
+	clear_config_maps();
+
 	ao2_cleanup(cfg_hooks);
 	cfg_hooks = NULL;
 }