From 6f53e7c5e4d6c6d097a2360e486b963347b29241 Mon Sep 17 00:00:00 2001
From: Sampo Savolainen <v2@iki.fi>
Date: Tue, 10 Oct 2006 20:17:36 +0000
Subject: [PATCH] Fix ghost zero lines

git-svn-id: svn://localhost/ardour2/trunk@974 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 gtk2_ardour/audio_region_view.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gtk2_ardour/audio_region_view.cc b/gtk2_ardour/audio_region_view.cc
index 076473881d..9892eb47cc 100644
--- a/gtk2_ardour/audio_region_view.cc
+++ b/gtk2_ardour/audio_region_view.cc
@@ -772,6 +772,9 @@ AudioRegionView::create_waves ()
 	}
 
 	if (create_zero_line) {
+		if (zero_line) {
+			delete zero_line;
+		}
 		zero_line = new ArdourCanvas::SimpleLine (*group);
 		zero_line->property_x1() = (gdouble) 1.0;
 		zero_line->property_x2() = (gdouble) (_region->length() / samples_per_unit) - 1.0;