do not crash if an LV2 plugin calls the UI write callback with a port number that...

git-svn-id: svn://localhost/ardour2/branches/3.0@11398 d708f5d6-7413-0410-9779-e7cbd77b26cf

diff --git a/gtk2_ardour/lv2_plugin_ui.cc b/gtk2_ardour/lv2_plugin_ui.cc
index 785a6b9721a87d32b2f042a3ffa0a48c9beb5b5f..751985871d3315a4d488ce1701a7f3dfc42d5f85 100644 (file)
--- a/gtk2_ardour/lv2_plugin_ui.cc
+++ b/gtk2_ardour/lv2_plugin_ui.cc
@@ -47,6 +47,11 @@ LV2PluginUI::lv2_ui_write(void*       controller,
                           const void* buffer)
 {
        LV2PluginUI* me = (LV2PluginUI*)controller;
+
+       if (port_index >= me->_controllables.size()) {
+               return;
+       }
+
        boost::shared_ptr<AutomationControl> ac = me->_controllables[port_index];
 
        if (ac) {