The NetBSD-current/i386 build is working again. The following commits were made between the last failed build and the successful build:
2019.07.23.13.10.11 christos src/lib/libedit/literal.c,v 1.5 Log files can be found at: http://releng.NetBSD.org/b5reports/i386/commits-2019.07.html#2019.07.23.13.10.11