Finalization depends on the expression, not on the component.

Finalization depends on the expression, not on the component.

This patch fixes a 8/9/10/11 regression, where finalized types
were not finalized (and deallocated), which led to memory
leaks.

gcc/fortran/ChangeLog:

2020-05-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/94361
	* class.c (finalize_component): Use expr->finalized instead of
	comp->finalized.
	* gfortran.h (gfc_component): Remove finalized member.
	(gfc_expr): Add it here instead.

gcc/testsuite/ChangeLog:

2020-05-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/94361
	* gfortran.dg/finalize_28.f90: Adjusted free counts.
	* gfortran.dg/finalize_34.f90: Likewise.
	* gfortran.dg/finalize_35.f90: New test.

(cherry picked from commit 2a0de88ccf2ecc6659b0f1e4580c1ce5cff976b3)