* Turn on thread safety checks in async_dispatcher_send
We keep seeing issues where async_dispatcher_send is called from
a thread which means we call the callback function on the other
side in the thread as well which usually leads to a crash
* Turn on thread safety checks in async_dispatcher_send
We keep seeing issues where async_dispatcher_send is called from
a thread which means we call the callback function on the other
side in the thread as well which usually leads to a crash
* adjust