demos: call DeviceWaitIdle before DestroyDevice

Change-Id: Ic5819027b706e8c5d66ae78d0d0da1133c16085b

diff --git a/demos/cube.cpp b/demos/cube.cpp
index d7e8436..24917e8 100644 (file)
--- a/demos/cube.cpp
+++ b/demos/cube.cpp
@@ -337,7 +337,7 @@ struct Demo {
         if (separate_present_queue) {
             device.destroyCommandPool(present_cmd_pool, nullptr);
         }
-
+        device.waitIdle();
         device.destroy(nullptr);
         inst.destroySurfaceKHR(surface, nullptr);
         inst.destroy(nullptr);