The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2017.01.25.14.46.16 christos src/external/bsd/tcpdump/dist/netdissect-stdinc.h,v 1.2 2017.01.25.14.53.43 jakllsch src/sys/dev/rasops/rasops15.c,v 1.21 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2017.01.html#2017.01.25.14.53.43