fix: Fix setAdBreakReadyListener. (#551)
fix: Fix setAdBreakReadyListener. (#551)

Resolves #550.
ypavlotsky/videojs-ima,googleads/videojs-ima,shawnbuso/videojs-ima,valse/videojs-ima,ypavlotsky/videojs-ima,tv2/videojs-ima,tv2/videojs-ima,valse/videojs-ima,shawnbuso/videojs-ima,googleads/videojs-ima