The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2016.11.21.20.15.16 christos src/external/bsd/wpa/bin/Makefile.inc,v 1.5 2016.11.21.20.15.16 christos src/external/bsd/wpa/bin/hostapd/Makefile,v 1.10 2016.11.21.20.15.16 christos src/external/bsd/wpa/bin/hostapd_cli/Makefile,v 1.3 2016.11.21.20.15.16 christos src/external/bsd/wpa/bin/wpa_cli/Makefile,v 1.5 2016.11.21.20.15.16 christos src/external/bsd/wpa/bin/wpa_supplicant/Makefile,v 1.9 2016.11.21.20.15.16 christos src/external/bsd/wpa/dist/hostapd/hostapd_cli.c,v 1.9 2016.11.21.20.15.16 christos src/external/bsd/wpa/dist/hostapd/main.c,v 1.4 2016.11.21.20.15.16 christos src/external/bsd/wpa/dist/patches/Attic/openssl-0.9.8za-tls-extensions.patch,v 1.2 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/ap/ap_drv_ops.c,v 1.4 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/ap/drv_callbacks.c,v 1.3 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/ap/hostapd.c,v 1.3 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/ap/hostapd.h,v 1.3 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/ap/wpa_auth.c,v 1.9 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/crypto/Attic/crypto_cryptoapi.c,v 1.2 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/crypto/Attic/tls_schannel.c,v 1.2 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/drivers/driver.h,v 1.3 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/drivers/driver_bsd.c,v 1.26 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/eap_peer/eap_pwd.c,v 1.5 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/eap_server/eap_server.c,v 1.3 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/eap_server/eap_server_pwd.c,v 1.4 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/eap_server/eap_server_tls_common.c,v 1.7 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/p2p/p2p.c,v 1.3 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/radius/radius_das.c,v 1.5 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/utils/common.c,v 1.4 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/utils/common.h,v 1.4 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/utils/eloop.c,v 1.13 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/utils/os.h,v 1.7 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/utils/os_unix.c,v 1.4 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/utils/radiotap.h,v 1.5 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/utils/trace.h,v 1.5 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/src/wps/httpread.c,v 1.3 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/Makefile,v 1.3 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/README,v 1.3 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/config.c,v 1.6 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/ctrl_iface.c,v 1.4 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/defconfig,v 1.3 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/driver_i.h,v 1.2 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/events.c,v 1.6 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/main.c,v 1.4 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/tests/Attic/link_test.c,v 1.2 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/tests/Attic/test_eap_sim_common.c,v 1.2 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/tests/Attic/test_wpa.c,v 1.2 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/wnm_sta.c,v 1.3 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/wpa_cli.c,v 1.9 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/wpa_priv.c,v 1.3 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/wpa_supplicant.c,v 1.7 2016.11.21.20.15.17 christos src/external/bsd/wpa/dist/wpa_supplicant/wpa_supplicant_i.h,v 1.3 2016.11.21.20.16.21 christos src/doc/3RDPARTY,v 1.1379 2016.11.21.20.16.21 christos src/doc/CHANGES,v 1.2211 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2016.11.html#2016.11.21.20.16.21