[gimp] app: fix signature of gimp_curves_tool_color_picked()

[Michael Natterer <mitch src gnome org>]

commit 3ca15939ffd24676bc1be58ca6d7f0a57d09af15
Author: Michael Natterer <mitch gimp org>
Date:   Tue Aug 25 23:51:33 2015 +0200

    app: fix signature of gimp_curves_tool_color_picked()
    
    which I forgot in yesterday's color picking refactoring.

 app/tools/gimpcurvestool.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/app/tools/gimpcurvestool.c b/app/tools/gimpcurvestool.c
index 075d697..a92a8dc 100644
--- a/app/tools/gimpcurvestool.c
+++ b/app/tools/gimpcurvestool.c
@@ -85,8 +85,8 @@ static void       gimp_curves_tool_color_picked   (GimpColorTool        *color_t
                                                    gdouble               x,
                                                    gdouble               y,
                                                    const Babl           *sample_format,
-                                                   const GimpRGB        *color,
-                                                   gint                  color_index);
+                                                   gpointer              pixel,
+                                                   const GimpRGB        *color);
 static GeglNode * gimp_curves_tool_get_operation  (GimpImageMapTool     *image_map_tool,
                                                    GObject             **config,
                                                    gchar               **undo_desc);
@@ -335,8 +335,8 @@ gimp_curves_tool_color_picked (GimpColorTool      *color_tool,
                                gdouble             x,
                                gdouble             y,
                                const Babl         *sample_format,
-                               const GimpRGB      *color,
-                               gint                color_index)
+                               gpointer            pixel,
+                               const GimpRGB      *color)
 {
   GimpCurvesTool *tool = GIMP_CURVES_TOOL (color_tool);
   GimpDrawable   *drawable;