Cleanup usage of memory free routines:

Cleanup usage of memory free routines:

	* util_crypt.c (kg_encrypt, kg_decrypt): Use free() instead of
	krb5_free_data_contents().

	* util_cksum.c (kg_checksum_channel_bindings): Make sure that
	returned memory is allocated with xmalloc() so that caller can use
	xfree() on it.

	* k5unseal.c (kg_unseal_v1):  Use krb5_free_data_contents()
	instead of xfree().

	* k5seal.c (make_seal_token_v1): Use krb5_free_data_contents()
	instead of xfree().

	* init_sec_context.c (make_ap_req_v1): Use xfree() instead of
	free() to be consistent with xmalloc() usage.  Use
	krb5_free_data_contents() instead of xfree().

	* disp_name.c (krb5_gss_display_name): Use
	krb5_free_unparsed_name() instead of xfree().

	* add_cred.c (krb5_gss_add_cred): Use xfree() instead of free() to
	be consistent with xmalloc() usage.

	* accept_sec_context.c (krb5_gss_accept_sec_context): Remove
	variables that were effectively unused.  Use
	krb5_free_data_contents() instead of xfree() where appropriate.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@13482 dc483132-0cff-0310-8789-dd5450dbe970