SWDEV-285318 - Wait for the queue before destruction

With direct dispatch enabled make sure the queue is done before
destruction.

Change-Id: Ib80af3efb97dfb93e2dce60a11db34fb5c45f5cd

rocclr/platform/commandqueue.cpp

@@ -54,6 +54,13 @@ HostQueue::HostQueue(Context& context, Device& device, cl_command_queue_properti
 
 bool HostQueue::terminate() {
   if (AMD_DIRECT_DISPATCH) {
+    Command* marker = new Marker(*this, true);
+    if (marker != nullptr) {
+      marker->enqueue();
+      marker->awaitCompletion();
+      marker->release();
+    }
+    thread_.acceptingCommands_ = false;
     thread_.Release();
   } else {
     if (Os::isThreadAlive(thread_)) {