Fix memory leak in test_framing

We call ogg_stream_init() in main() of framing.c, but no
ogg_stream_clear() in corresponding. It will cause memory leak.

Signed-off-by: Ralph Giles <giles@thaumas.net>
diff --git a/src/framing.c b/src/framing.c
index 44da787..baa2eec 100644
--- a/src/framing.c
+++ b/src/framing.c
@@ -2099,6 +2099,8 @@
       }
     }
   }
+  ogg_stream_clear(&os_en);
+  ogg_stream_clear(&os_de);
 
   return(0);
 }