Use XMLNode::set_property API in ARDOUR::SMFSource class

diff --git a/libs/ardour/smf_source.cc b/libs/ardour/smf_source.cc
index 6a05ab706dd1416ced741ccacc5fbd6f205cc0f7..76d379e9477b34df62deecee23f863245c237157 100644 (file)
--- a/libs/ardour/smf_source.cc
+++ b/libs/ardour/smf_source.cc
@@ -499,7 +499,7 @@ XMLNode&
 SMFSource::get_state ()
 {
        XMLNode& node = MidiSource::get_state();
-       node.add_property (X_("origin"), _origin);
+       node.set_property (X_("origin"), _origin);
        return node;
 }