[gimp] app: workaround warning about empty private struct

[Sven Neumann <neo src gnome org>]

commit ddcd5a69834840b3fd420d85c092f6f3da7f86cc
Author: Sven Neumann <sven gimp org>
Date:   Wed Sep 22 23:38:08 2010 +0200

    app: workaround warning about empty private struct

 app/display/gimpcanvasitem.c |    1 +
 app/display/gimpcanvasline.c |    3 +--
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/app/display/gimpcanvasitem.c b/app/display/gimpcanvasitem.c
index 16f77df..829d547 100644
--- a/app/display/gimpcanvasitem.c
+++ b/app/display/gimpcanvasitem.c
@@ -36,6 +36,7 @@ typedef struct _GimpCanvasItemPrivate GimpCanvasItemPrivate;
 
 struct _GimpCanvasItemPrivate
 {
+  gint unused;  /*  gobject doesn't like empty private structs  */
 };
 
 #define GET_PRIVATE(item) \
diff --git a/app/display/gimpcanvasline.c b/app/display/gimpcanvasline.c
index 4af0436..f29a6aa 100644
--- a/app/display/gimpcanvasline.c
+++ b/app/display/gimpcanvasline.c
@@ -76,8 +76,7 @@ static GdkRegion * gimp_canvas_line_get_extents  (GimpCanvasItem   *item,
                                                   GimpDisplayShell *shell);
 
 
-G_DEFINE_TYPE (GimpCanvasLine, gimp_canvas_line,
-               GIMP_TYPE_CANVAS_ITEM)
+G_DEFINE_TYPE (GimpCanvasLine, gimp_canvas_line, GIMP_TYPE_CANVAS_ITEM)
 
 #define parent_class gimp_canvas_line_parent_class