Prevent glib CRITICAL errors for NULL pointers

daemon/tcp_listener.c

@@ -247,6 +247,7 @@ void streambuf_listener_shutdown(struct streambuf_listener *listener) {
 		return;
 	poller_del_item(listener->poller, listener->listener.fd);
 	close_socket(&listener->listener);
+	if (listener->streams)
 		g_hash_table_destroy(listener->streams);
 }
 

lib/auxlib.c

@@ -102,15 +102,19 @@ void config_load_free(struct rtpengine_common_config *cconfig) {
 }
 
 static void free_gkeyfile(GKeyFile **k) {
+	if (k && *k)
 		g_key_file_free(*k);
 }
 static void free_gopte(GOptionEntry **k) {
+	if (k && *k)
 		free(*k);
 }
 static void free_goptc(GOptionContext **k) {
+	if (k && *k)
 		g_option_context_free(*k);
 }
 static void free_gerror(GError **k) {
+	if (k && *k)
 		g_error_free(*k);
 }