hls: avoid hiding poster when loading video without autoplay
hls: avoid hiding poster when loading video without autoplay

clappr/clappr,jfairley/clappr,dayvson/clappr,jfairley/clappr,dayvson/clappr,flavioribeiro/clappr,flavioribeiro/clappr,flavioribeiro/clappr,jfairley/clappr,clappr/clappr,dayvson/clappr,clappr/clappr