Scott Lamb e8a00d4639 use parking_lot::Once in ffmpeg
I'm getting deprecation warnings for std::sync::ONCE_INIT, and I'm
not sure when std::sync::Once::new() became a const fn. Just as easy to
switch to parking_lot.
2019-12-28 08:03:05 -06:00
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2019-12-28 08:03:05 -06:00
2019-12-28 08:03:05 -06:00