vidi-player.py: fix a regression introduced in commit d2933a9ba8a8

In commit d2933a9ba8a8 (vidi-player.py: move the actual processing after
the arguments validation) there was a spurious change which broke
calling check_overlapping_notes(). Fix it.

diff --git a/vidi-player.py b/vidi-player.py
index 7cec441..fed0687 100755 (executable)
--- a/vidi-player.py
+++ b/vidi-player.py
@@ -97,7 +97,7 @@ def main():
 
     midi_file = mido.MidiFile(sys.argv[1])
 
-    overlapping_notes = check_overlapping_notes(midi_file, 0)
+    overlapping_notes = check_overlapping_notes(midi_file)
     if overlapping_notes:
         sys.stderr.write("Sorry, supporting only midi file with no overlapping notes on channel 0\n")
         return 1