[f-spot] TiltEditor: Rotate photo clockwise when slider is moved to the right, and counter clockwise when mov

[Ruben Vermeersch <rubenv src gnome org>]

commit fbc0cbd645c607cb25646bef7ba3eb618705c01e
Author: Alex Launi <alex launi gmail com>
Date:   Mon Jul 5 17:40:24 2010 -0400

    TiltEditor: Rotate photo clockwise when slider is moved to the right, and counter clockwise when moved left.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=621840

 src/Editors/TiltEditor.cs |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/Editors/TiltEditor.cs b/src/Editors/TiltEditor.cs
index f14d817..593e87e 100644
--- a/src/Editors/TiltEditor.cs
+++ b/src/Editors/TiltEditor.cs
@@ -75,7 +75,7 @@ namespace FSpot.Editors
 
 		private void HandleValueChanged (object sender, System.EventArgs args)
 		{
-			angle = scale.Value * Math.PI / 180;
+			angle = scale.Value * Math.PI / -180;
 			UpdatePreview ();
 		}
 	}