relive: handle missing scrub thumbs correctly

Previously, when relive didn't supply a sprites file to the player, we'd
simply pass undefined into buildSpriteConfig, which only worked because
of the way the arguments are handled internally in that function, but
does not represent a proper use of the plugin's API.

Instead, we now manually check whether relive has supplied a sprites
file and explicitly pass an empty thumbs array to the plugin in such a
case.

0 files changed, 0 insertions, 0 deletions