Fix build for older glib

src/util/common.c

@@ -605,3 +605,18 @@ void get_text_size2(PangoFontDescription *font,
 	cairo_surface_destroy(cs);
 	XFreePixmap(server.dsp, pmap);
 }
+
+#if !GLIB_CHECK_VERSION (2, 33, 4)
+GList *g_list_copy_deep(GList *list, GCopyFunc func, gpointer user_data)
+{
+	list = g_list_copy(list);
+
+	if (func) {
+		for (GList *l = list; l; l = l->next) {
+			l->data = func(l->data, user_data);
+		}
+	}
+
+	return list;
+}
+#endif