tests: Convert to using Instancing APIs rather than xglInitAndEnumerateGpus
diff --git a/tests/xglrenderframework.h b/tests/xglrenderframework.h
index 21a03e5..d05021c 100644
--- a/tests/xglrenderframework.h
+++ b/tests/xglrenderframework.h
@@ -65,6 +65,7 @@
 
 protected:
     XGL_APPLICATION_INFO                    app_info;
+    XGL_INSTANCE                            inst;
     XGL_PHYSICAL_GPU                        objs[XGL_MAX_PHYSICAL_GPUS];
     uint32_t                                gpu_count;
     XglDevice                              *m_device;