extmod/modussl_mbedtls: When reading and peer wants to close, return 0.
extmod/modussl_mbedtls: When reading and peer wants to close, return 0.

If this particular code is returned then there's no more data, it's not
really an error.

SHA2017-badge/micropython-esp32,MrSurly/micropython-esp32,MrSurly/micropython-esp32,Peetz0r/micropython-esp32,micropython/micropython-esp32,SHA2017-badge/micropython-esp32,micropython/micropython-esp32,Peetz0r/micropython-esp32,Peetz0r/micropython-esp32,micropython/micropython-esp32,Peetz0r/micropython-esp32,MrSurly/micropython-esp32,SHA2017-badge/micropython-esp32,micropython/micropython-esp32,MrSurly/micropython-esp32,SHA2017-badge/micropython-esp32,SHA2017-badge/micropython-esp32,MrSurly/micropython-esp32,micropython/micropython-esp32,Peetz0r/micropython-esp32