If util.trigger_callback() is called from the asyncio loop, run the callback synchronously.
If util.trigger_callback() is called from the asyncio loop,
run the callback synchronously.

spesmilo/electrum,pooler/electrum-ltc,pooler/electrum-ltc,spesmilo/electrum,pooler/electrum-ltc,spesmilo/electrum,spesmilo/electrum,pooler/electrum-ltc