Fix for Sentry OPENSHOT-22QG: AttributeError 'NoneType' object has no attribute 'info'

Author: jonoomph

src/classes/waveform.py

@@ -163,6 +163,9 @@ def getAudioData(file, channel=-1, tid=None):
         # Loop through samples from the file, applying this clip's volume curve
         clip_audio_data = []
         clip_instance = get_app().window.timeline_sync.timeline.GetClip(clip.id)
+        if not clip_instance:
+            log.info("Clip not found, bailing out of waveform volume adjustments")
+            continue
         num_frames = clip_instance.info.video_length
 
         # Determine best guess # of samples (based on duration)