MediaAssets: Crash in UMediaSoundComponent::UpdatePlayer

When assigning the same Player

1. Create a MediaPlayer asset
2. Create a MediaSoundComponent component on actor
3. Select the MediaSoundComponent
4. Assign the MediaPlayer to the MediaSoundComponent's 'Media Player' property
5. Clear the MediaSoundComponent's 'Media Player' property
6. Assign the same MediaPlayer to the MediaSoundComponent's 'Media Player' property again

Result: Assertion triggered