plugins.bbciplayer: small change to where the VPID is extracted from (#2376)
plugins.bbciplayer: small change to where the VPID is extracted from (#2376)

* plugins.bbciplayer: small change to where the VPID is extracted from

* plugins.bbciplayer: filter out streams without a href

beardypig/streamlink,bastimeyer/streamlink,chhe/streamlink,gravyboat/streamlink,melmorabity/streamlink,streamlink/streamlink,wlerin/streamlink,beardypig/streamlink,wlerin/streamlink,gravyboat/streamlink,chhe/streamlink,streamlink/streamlink,bastimeyer/streamlink,melmorabity/streamlink