Since the update of Samba to version 4.4, freeipa fails to build

The build log contains:

>[  210s] mv -f .deps/ipa_pwd_ntlm.Tpo .deps/ipa_pwd_ntlm.Plo
>[  210s] ipa_sam.c:108:0: warning: "LDAP_PAGE_SIZE" redefined
>[  210s]  #define LDAP_PAGE_SIZE 1024
>[  210s]  ^
>[  210s] In file included from /usr/include/samba-4.0/smbldap.h:24:0,
>[  210s]                  from ipa_sam.c:25:
>[  210s] /usr/include/samba-4.0/smb_ldap.h:81:0: note: this is the location of the previous definition
>[  210s]  #define LDAP_PAGE_SIZE 1000
>[  210s]  ^
>[  210s] ipa_sam.c: In function 'ldapsam_uid_to_sid':
>[  210s] ipa_sam.c:827:24: error: implicit declaration of function 'talloc_stackframe' [-Werror=implicit-function-declaration]
>[  210s]   TALLOC_CTX *tmp_ctx = talloc_stackframe();
>[  210s]                         ^
>[  210s] ipa_sam.c:827:24: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
>[  210s] ipa_sam.c: In function 'ldapsam_gid_to_sid':
>[  210s] ipa_sam.c:914:24: warning: initialization makes pointer from integer without a cast [-Wint-conversion]
>[  210s]   TALLOC_CTX *tmp_ctx = talloc_stackframe();
>[  210s]                         ^
>[  210s] ipa_sam.c: In function 'pdb_init_ipasam':
>[  210s] ipa_sam.c:4426:2: error: implicit declaration of function 'trim_string' [-Werror=implicit-function-declaration]
>[  210s]   trim_string( uri, "\"", "\"" );
>[  210s]   ^
>[  210s] ipa_sam.c:4513:26: error: implicit declaration of function 'smb_xstrdup' [-Werror=implicit-function-declaration]
>[  210s]   ldap_state->domain_dn = smb_xstrdup(dn);
>[  210s]                           ^
>[  210s] ipa_sam.c:4513:24: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
>[  210s]   ldap_state->domain_dn = smb_xstrdup(dn);

Upstream addressed this in
https://git.fedorahosted.org/cgit/freeipa.git/commit/daemons/ipa-sam/ipa_sam.c?id=017b343e13bbfdd0d9951417be8dac4614cb1416