Clean up resources in projection test
diff --git a/tests/test_opus_projection.c b/tests/test_opus_projection.c
index 4d622e8..5f0d672 100644
--- a/tests/test_opus_projection.c
+++ b/tests/test_opus_projection.c
@@ -360,6 +360,8 @@
     goto bad_cleanup;
   }
 
+  opus_projection_decoder_destroy(st_dec);
+  opus_projection_encoder_destroy(st_enc);
   free(buffer_in);
   free(buffer_out);
   return;