soundd: use with statement for wave.open to ensure proper resource cleanup (#34815)

use with statement for wave.open to ensure proper resource cleanup

selfdrive/ui/soundd.py

@@ -69,14 +69,13 @@ class Soundd:
     for sound in sound_list:
       filename, play_count, volume = sound_list[sound]
 
-      wavefile = wave.open(BASEDIR + "/selfdrive/assets/sounds/" + filename, 'r')
+      with wave.open(BASEDIR + "/selfdrive/assets/sounds/" + filename, 'r') as wavefile:
+        assert wavefile.getnchannels() == 1
+        assert wavefile.getsampwidth() == 2
+        assert wavefile.getframerate() == SAMPLE_RATE
 
-      assert wavefile.getnchannels() == 1
+        length = wavefile.getnframes()
-      assert wavefile.getsampwidth() == 2
+        self.loaded_sounds[sound] = np.frombuffer(wavefile.readframes(length), dtype=np.int16).astype(np.float32) / (2**16/2)
-      assert wavefile.getframerate() == SAMPLE_RATE
-
-      length = wavefile.getnframes()
-      self.loaded_sounds[sound] = np.frombuffer(wavefile.readframes(length), dtype=np.int16).astype(np.float32) / (2**16/2)
 
   def get_sound_data(self, frames): # get "frames" worth of data from the current alert sound, looping when required