IPA ICF: fix memory leak.

	* ipa-icf.c (sem_function::equals_private): int* is replaced with
	auto_vec.
	(sem_function::bb_dict_test): Likewise.
	* ipa-icf.h: Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218129 138bc75d-0d04-0410-961f-82ee72b054a4