[chronojump] Erase encoder bars at new capture

[Xavier de Blas <xaviblas src gnome org>]

commit 3ba901f5739bf17d5a39465c0e650a046696c96a
Author: Xavier de Blas <xaviblas gmail com>
Date:   Wed Feb 5 18:12:35 2020 +0100

    Erase encoder bars at new capture

 src/gui/app1/encoder.cs | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/gui/app1/encoder.cs b/src/gui/app1/encoder.cs
index 1f54bbdf..10be3414 100644
--- a/src/gui/app1/encoder.cs
+++ b/src/gui/app1/encoder.cs
@@ -5528,6 +5528,9 @@ public partial class ChronoJumpWindow
                                if( ! radio_encoder_capture_cont.Active || firstSetOfCont )
                                        treeviewEncoderCaptureRemoveColumns();
 
+                               if(encoder_capture_curves_bars_pixmap != null)
+                                       UtilGtk.ErasePaint(encoder_capture_curves_bars_drawingarea, 
encoder_capture_curves_bars_pixmap);
+
                                encoderCaptureStringR = new List<string>();
                                encoderCaptureStringR.Add(
                                                ",series,exercise,mass,start,width,height," +