[gegl] layer: add missing "nick" key in varargs

[Øyvind Kolås <ok src gnome org>]

commit bd6b378c30cc8ac925bfdf0a100a2dcb4fcbf665
Author: Øyvind Kolås <pippin gimp org>
Date:   Thu May 15 05:12:25 2014 +0200

    layer: add missing "nick" key in varargs

 operations/common/layer.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/operations/common/layer.c b/operations/common/layer.c
index fafae06..f5c813a 100644
--- a/operations/common/layer.c
+++ b/operations/common/layer.c
@@ -43,7 +43,8 @@ gegl_property_double(
     NULL)
 
 gegl_property_double(
-    x, _("X"),
+    x,
+    "nick",  _("X"),
     "blurb", _("Horizontal position in pixels"),
     NULL)