 [HAIER_AC176] Replace some magic numbers with constants (#1679)
 [HAIER_AC176] Replace some magic numbers with constants (#1679)

* Replace magic numbers `22` with `kHaierAC176StateLength` value
markszabo/IRremoteESP8266,markszabo/IRremoteESP8266,markszabo/IRremoteESP8266,markszabo/IRremoteESP8266