[gegl] perf: Exit cleanly

[Debarshi Ray <debarshir src gnome org>]

commit 0f4086e591323576be282d2b2a121cf2bc656baf
Author: Debarshi Ray <debarshir gnome org>
Date:   Sun Dec 17 22:06:39 2017 +0100

    perf: Exit cleanly

 perf/test-blur.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/perf/test-blur.c b/perf/test-blur.c
index 8c01c52..930c44f 100644
--- a/perf/test-blur.c
+++ b/perf/test-blur.c
@@ -12,6 +12,10 @@ main (gint    argc,
 
   buffer = test_buffer(1024, 1024, babl_format("RGBA float"));
   bench("gaussian-blur", buffer, &blur);
+  g_object_unref (buffer);
+
+  gegl_exit ();
+  return 0;
 }
 
 void blur(GeglBuffer *buffer)