[chronojump] ForceSensor analyze feedback error only if checkbos is active

[Xavier de Blas <xaviblas src gnome org>]

commit d42d740412e92e46e7c0bce091ec705ac8da5519
Author: Xavier de Blas <xaviblas gmail com>
Date:   Tue Oct 1 13:12:00 2019 +0200

    ForceSensor analyze feedback error only if checkbos is active

 src/gui/forceSensorAnalyze.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/gui/forceSensorAnalyze.cs b/src/gui/forceSensorAnalyze.cs
index 85b1665d..033f010f 100644
--- a/src/gui/forceSensorAnalyze.cs
+++ b/src/gui/forceSensorAnalyze.cs
@@ -1021,7 +1021,7 @@ public partial class ChronoJumpWindow
                                        layout_force_ai_text);
 
                        // 12) calculate and paint Accuracy (Feedback difference)
-                       if(feedbackF > 0)
+                       if(check_force_sensor_capture_feedback.Active && feedbackF > 0)
                        {
                                layout_force_ai_text.SetMarkup(string.Format("Error (Feedback): {0:0.###} N",
                                                        Math.Round(feedbackDiff, 3) ));