Remove "fixup is ignored" warning when fixup wasn't passed by user

Closes #151

diff --git a/yt_dlp/options.py b/yt_dlp/options.py
index 2d7961f0f0d4cd4982b799b5e8c6c9bccc107e0b..adef0e0a83cf11c591e7ee04f491145714bc5f4c 100644 (file)
--- a/yt_dlp/options.py
+++ b/yt_dlp/options.py
@@ -1154,7 +1154,7 @@ def _dict_from_multiple_values_options_callback(
         help='Write metadata to the video file\'s xattrs (using dublin core and xdg standards)')
     postproc.add_option(
         '--fixup',
-        metavar='POLICY', dest='fixup', default='detect_or_warn',
+        metavar='POLICY', dest='fixup', default=None,
         help=(
             'Automatically correct known faults of the file. '
             'One of never (do nothing), warn (only emit a warning), '