ada: Fix wrong finalization for qualified aggregate of limited type in allocator

ada: Fix wrong finalization for qualified aggregate of limited type in allocator

This happens with -gnata when the limited type has controlled components
and a predicate, because the predicate check generated for the aggregate
causes the creation of a temporary that is used as the expression of the
allocator.  Now this combination is illegal for a limited type, so the
compiler does not generate the deep adjustment that would be necessary
for the access value, which ultimately results in a wrong finalization.

gcc/ada/

	* checks.adb (Apply_Predicate_Check): Also deal specifically with
	an expression that is a qualified aggregate in an allocator.