MPVView: workaround NumberFormatException in TrackDelegate
MPVView: workaround NumberFormatException in TrackDelegate

Not sure what causes it, but this should solve the issue.

jeeb/mpv-android,jeeb/mpv-android,mpv-android/mpv-android,jeeb/mpv-android,jeeb/mpv-android,jeeb/mpv-android,mpv-android/mpv-android,mpv-android/mpv-android,mpv-android/mpv-android,mpv-android/mpv-android