plugins.foxtr: fix playervars_re (#3013)
plugins.foxtr: fix playervars_re (#3013)

fixes #3006
chhe/streamlink,gravyboat/streamlink,chhe/streamlink,melmorabity/streamlink,beardypig/streamlink,gravyboat/streamlink,bastimeyer/streamlink,beardypig/streamlink,streamlink/streamlink,streamlink/streamlink,melmorabity/streamlink,bastimeyer/streamlink