tests: Delete device in teardown when finished with it.
diff --git a/tests/init.cpp b/tests/init.cpp
index 955e7fe..700f7a2 100644
--- a/tests/init.cpp
+++ b/tests/init.cpp
@@ -133,6 +133,7 @@
     }
 
     virtual void TearDown() {
+        delete m_device;
         vkDestroyInstance(inst);
     }
 };