fix progress inaccuracy

build_library.py

@@ -81,14 +81,14 @@ async def build_library(root_dir):
 		while True:
 			try:
 				track = mapping.next()
-				if track:
-					tracks.append(track)
+				tracks.append(track)
 			except StopIteration:
 				break
 			percent = round(len(tracks) / len(filepaths) * 100, 2)
 			if percent >= prev_percent + 2.5:
 				print(f"{percent}%")
 				prev_percent = percent
+	tracks = [t for t in tracks if t]
 	if not tracks:
 		print("No new tracks found!")
 		return