[gimp] app: free a GimpPixPipeParams value (reported by Massimo).

[Jehan <jehanp src gnome org>]

commit b93c416e424284f269226e137fd9fa154527408d
Author: Jehan <jehan girinstud io>
Date:   Mon Aug 16 19:15:48 2021 +0200

    app: free a GimpPixPipeParams value (reported by Massimo).

 app/file-data/file-data-gih.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/app/file-data/file-data-gih.c b/app/file-data/file-data-gih.c
index 3d6af0184d..3b025d62ef 100644
--- a/app/file-data/file-data-gih.c
+++ b/app/file-data/file-data-gih.c
@@ -234,6 +234,8 @@ file_gih_pipe_to_image (Gimp          *gimp,
           gimp_parasite_free (parasite);
           g_free (paramstring);
         }
+
+      gimp_pixpipe_params_free (&params);
     }
 
   return image;