Initialize wavfile in adafruit_fruitjam.peripherals.Peripherals constructor

[relic-se]

If you attempt to call stop_play() before calling play_file, the wavfile property will not be defined and throw an AttributeError. This fix simply declares this property as None within the constructor to prevent this error.

Board Definition

Adafruit CircuitPython 10.0.3 on 2025-10-17; Adafruit Fruit Jam with rp2350b

Example Code

import adafruit_fruitjam.peripherals
peripherals = adafruit_fruitjam.peripherals.Peripherals()
peripherals.stop_play()

REPL Output

(before fix)

Traceback (most recent call last):
  File "<stdin>", line 3, in <module>
  File "adafruit_fruitjam/peripherals.py", line 336, in stop_play
AttributeError: 'Peripherals' object has no attribute 'wavfile'

[FoamyGuy]

Thanks for the fix!