Explosions are no longer pushing primed TNT.

This was introduced in craftbukkit commit c8f17232cf6 and appears to be because the below always returns false:

boolean wasDamaged = entity.damageEntity(DamageSource.explosion(this), (float) ((int) ((d13 * d13 + d13) / 2.0D * 8.0D * (double) f3 + 1.0D)));