fix audio issue with ejecta when recycling sound node
fix audio issue with ejecta when recycling sound node

this is a temporary fix, as Ejecta in some condition changes back the
`readyState` value from 4 (ready to play) to 2 (no enough data to play
the next frame), and this for audio sound that were already loaded with
a `readyState` of 4

rlugojr/melonJS,melonjs/melonJS,rlugojr/melonJS,rlugojr/melonJS,melonjs/melonJS