zlibstream: fix throws an exception when a system error message >= 80 bytes
zlibstream: fix throws an exception when a system error message >= 80 bytes

btccom/btcpool,btccom/btcpool,btccom/btcpool,btccom/btcpool,btccom/btcpool,btccom/btcpool,btccom/btcpool,btccom/btcpool