[gimp] libgimpbase: make the private data size > 0 to avoid critical warnings

[Simon Budig <simon src gnome org>]

commit 0d073b943c2a35ba910593b20ff112a448c74ef3
Author: Simon Budig <simon budig de>
Date:   Mon Jan 30 17:05:23 2017 +0100

    libgimpbase: make the private data size > 0 to avoid critical warnings

 libgimpbase/gimpmetadata.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/libgimpbase/gimpmetadata.c b/libgimpbase/gimpmetadata.c
index 8af784c..ad4d7b9 100644
--- a/libgimpbase/gimpmetadata.c
+++ b/libgimpbase/gimpmetadata.c
@@ -48,6 +48,8 @@ struct _GimpMetadata
 
 struct _GimpMetadataPrivate
 {
+  /* dummy entry to avoid a critical warning due to size 0 */
+  gpointer _gimp_reserved1;
 };
 
 struct _GimpMetadataClass