[gimp] libgimpmodule: annotate one function, now warning-free

[Michael Natterer <mitch src gnome org>]

commit 1099d609af08f31948bdb860cd8eb3511722408e
Author: Michael Natterer <mitch gimp org>
Date:   Thu Aug 1 10:21:47 2019 +0200

    libgimpmodule: annotate one function, now warning-free

 libgimpmodule/gimpmoduledb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/libgimpmodule/gimpmoduledb.c b/libgimpmodule/gimpmoduledb.c
index d3f65f8faa..30020e587d 100644
--- a/libgimpmodule/gimpmoduledb.c
+++ b/libgimpmodule/gimpmoduledb.c
@@ -195,7 +195,8 @@ gimp_module_db_new (gboolean verbose)
  * Returns a #GList of the modules kept by @db. The list must not be
  * modified or freed.
  *
- * Return value: a #GList of #GimpModule instances.
+ * Return value: (element-type GimpModule) (transfer none): a #GList
+ * of #GimpModule instances.
  *
  * Since: 3.0
  **/