[gtk+] colorscale: Avoid invalid write

[Timm Bäder <baedert src gnome org>]

commit 6b01940194f84a7dc042e9561024a357702c88f7
Author: Timm Bäder <mail baedert org>
Date:   Mon Oct 17 18:34:07 2016 +0200

    colorscale: Avoid invalid write

 gtk/gtkcolorscale.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkcolorscale.c b/gtk/gtkcolorscale.c
index 7815455..e1bf973 100644
--- a/gtk/gtkcolorscale.c
+++ b/gtk/gtkcolorscale.c
@@ -106,7 +106,7 @@ gtk_color_scale_draw_trough (GtkColorScale  *scale,
               red = CLAMP (r * 255, 0, 255);
               green = CLAMP (g * 255, 0, 255);
               blue = CLAMP (b * 255, 0, 255);
-              p[x] = (red << 16) | (green << 8) | blue;
+              p[hue_x] = (red << 16) | (green << 8) | blue;
             }
         }