fix memory leak in device_read_many() and device_read()
fix memory leak in device_read_many() and device_read()

gvalkov/python-evdev,gcd0318/python-evdev,gcd0318/python-evdev,ProfessorKaos64/python-evdev,ProfessorKaos64/python-evdev,ProfessorKaos64/python-evdev,gvalkov/python-evdev,gcd0318/python-evdev