[ntcore] Properly clean up time sync listeners (#7398)

Author: PeterJohnson

ntcore/src/main/native/cpp/ListenerStorage.cpp

@@ -354,6 +354,7 @@ void ListenerStorage::Reset() {
   m_topicListeners.clear();
   m_valueListeners.clear();
   m_logListeners.clear();
+  m_timeSyncListeners.clear();
   if (m_thread) {
     m_thread.Stop();
   }
@@ -384,6 +385,9 @@ ListenerStorage::DoRemoveListeners(std::span<const NT_Listener> handles) {
           (listener->eventMask & 0x1ff0000) != 0) {
         m_logListeners.Remove(listener.get());
       }
+      if ((listener->eventMask & NT_EVENT_TIMESYNC) != 0) {
+        m_timeSyncListeners.Remove(listener.get());
+      }
     }
   }
   return rv;