[gimp] plug-ins: fix pagecurl arguments order after GimpImageProcedure port.

[Jehan <jehanp src gnome org>]

commit 5b3e8e1f057250605079c253d25f59ca468a1e0e
Author: Jehan <jehan girinstud io>
Date:   Sun Aug 18 21:53:45 2019 +0200

    plug-ins: fix pagecurl arguments order after GimpImageProcedure port.
    
    The additional arguments are ordered down -3.

 plug-ins/pagecurl/pagecurl.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/plug-ins/pagecurl/pagecurl.c b/plug-ins/pagecurl/pagecurl.c
index e42cac54eb..608a112550 100644
--- a/plug-ins/pagecurl/pagecurl.c
+++ b/plug-ins/pagecurl/pagecurl.c
@@ -291,10 +291,10 @@ pagecurl_run (GimpProcedure        *procedure,
 
   image_id = image;
 
-  curl.colors      = g_value_get_int     (gimp_value_array_index (args, 3));
-  curl.edge        = g_value_get_int     (gimp_value_array_index (args, 4));
-  curl.orientation = g_value_get_int     (gimp_value_array_index (args, 5));
-  curl.shade       = g_value_get_boolean (gimp_value_array_index (args, 6));
+  curl.colors      = g_value_get_int     (gimp_value_array_index (args, 0));
+  curl.edge        = g_value_get_int     (gimp_value_array_index (args, 1));
+  curl.orientation = g_value_get_int     (gimp_value_array_index (args, 2));
+  curl.shade       = g_value_get_boolean (gimp_value_array_index (args, 3));
 
   if (! gimp_drawable_mask_intersect (drawable_id, &sel_x, &sel_y,
                                       &true_sel_width, &true_sel_height))