fix: regard reason codes greater than 0x80 as failures. (IDFGH-12507)

espressif / esp-mqtt

ESP32 mqtt component

Apache License 2.0

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Closed tigercl closed 3 months ago

tigercl commented 3 months ago

MQTT 5.0 adds some new Reason Codes that indicate subscription failure. These Reason Codes are greater than 0x80.