Use auto_vec in ssa_equiv_stack.
There is a mismatch between the new and the delete for the
ssa_equiv_stack class. The correct idiom should have been delete.
It has been pointed out that perhaps a better alternative is to use
an auto_vec which does everything automatically. Plus, it is more
consistent with m_stack which is already an auto_vec.
This patch fixes the issue in PR100984.
Tested on x86-64 Linux.
* gimple-ssa-evrp.c (ssa_equiv_stack): Use auto_vec for
1 file changed