* vms-lib.c (_bfd_vms_lib_get_module): Use bfd_zmalloc for
	areltdata.
	* opncls.c (_bfd_delete_bfd): Free arelt_data.
	* mach-o.c (bfd_mach_o_fat_member_init): Use bfd_zmalloc for
	areltdata.
	* ecoff.c (_bfd_ecoff_slurp_armap): Use free for mapdata.
	* coff-rs6000.c (_bfd_xcoff_read_ar_hdr): Use bfd_zmalloc for
	areltdata.
	(xcoff_write_archive_contents_old): Likewise.
	(xcoff_write_archive_contents_big): Likewise.
	* archive64.c (bfd_elf64_archive_slurp_armap): Use free for
	areltdata.
	* archive.c (_bfd_generic_read_ar_hdr_mag): Use bfd_zmalloc and
	free for areltdata.
	(_bfd_get_elt_at_filepos): Likewise.  Clear n_nfd->arelt_data on
	failure.
	(do_slurp_bsd_armap): Use bfd_zmalloc and free for areltdata.
	(do_slurp_coff_armap): Likewise.
	(_bfd_slurp_extended_name_table): Likewise.
	(bfd_slurp_bsd_armap_f2): Likewise.  Don't leak 'mapdata'.