tests: Add dynamic function pointers to LVTs

Change-Id: I9ed5e5e7fb9643d58c0876458584b1c729836be0
diff --git a/tests/vktestframework.cpp b/tests/vktestframework.cpp
index c970523..ef5ae06 100644
--- a/tests/vktestframework.cpp
+++ b/tests/vktestframework.cpp
@@ -131,6 +131,8 @@
     glslang::InitializeProcess();
 
     vk_testing::set_error_callback(test_error_callback);
+
+    vk::InitDispatchTable();
 }
 
 void TestEnvironment::TearDown() { glslang::FinalizeProcess(); }