The advent of this child's 18th birthday is without significance to the result here. Jenkins v. Jenkins, 233 Ga. 902 (214 SE2d 368) (1975); Choquette v. Choquette, 232 Ga. 759 (208 SE2d 848) (1974).

There is no merit to the father's claim that the living expense he furnished this child over and above the educational expenses he was required by the decree to meet should be a set-off against the arrearage in child support due the mother. Adams v. Adams, 225 Ga. 375, 377 (169 SE2d 160) (1969). The father is not being subjected to any double liability he is voluntarily paying expenses For which he is not legally obligated under the decree, which does not require him to pay the child's "board" while at college.

The contempt judgment was authorized, and the award of attorney fees to the mother under Code Ann. 30-219 was proper.