Fix somewhat unlikely crash on doing add note; start drag to resize note; undo; finish drag to resize note.

git-svn-id: svn://localhost/ardour2/branches/3.0@10880 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 8 insertions, 0 deletions

diff --git a/gtk2_ardour/editor_ops.cc b/gtk2_ardour/editor_ops.cc
index 4a9183ddd2..c598af2453 100644
--- a/gtk2_ardour/editor_ops.cc
+++ b/gtk2_ardour/editor_ops.cc
@@ -104,6 +104,10 @@ using Gtkmm2ext::Keyboard;
 void
 Editor::undo (uint32_t n)
 {
+	if (_drags->active ()) {
+		_drags->abort ();
+	}
+	
 	if (_session) {
 		_session->undo (n);
 	}
@@ -112,6 +116,10 @@ Editor::undo (uint32_t n)
 void
 Editor::redo (uint32_t n)
 {
+	if (_drags->active ()) {
+		_drags->abort ();
+	}
+	
 	if (_session) {
 		_session->redo (n);
 	}