return null when dlopen() fails to load a plugin shared object

git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@6020 d708f5d6-7413-0410-9779-e7cbd77b26cf

diff --git a/libs/ardour/ladspa_plugin.cc b/libs/ardour/ladspa_plugin.cc
index 16a87888b51c4fa0c19549c8f8cae5a7fcf02401..c782b54f18769bcb434036e0d1006b34f7a7f4e3 100644 (file)
--- a/libs/ardour/ladspa_plugin.cc
+++ b/libs/ardour/ladspa_plugin.cc
@@ -657,6 +657,7 @@ LadspaPluginInfo::load (Session& session)
                if ((module = dlopen (path.c_str(), RTLD_NOW)) == 0) {
                        error << string_compose(_("LADSPA: cannot load module from \"%1\""), path) << endmsg;
                        error << dlerror() << endmsg;
+                       return PluginPtr ((Plugin*) 0);
                } else {
                        plugin.reset (new LadspaPlugin (module, session.engine(), session, index, session.frame_rate()));
                }