src/lib/err/torerr.c missing STDERR_FILENO on Windows after refactor

The Windows Jenkins builds seem to be failing on master due to the torerr.c refactor: https://jenkins.torproject.org/view/Failed+Unstable/job/tor-ci-windows-master/1962/consoleFull

18:59:29 depbase=`echo src/lib/err/torerr.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\
18:59:29 	gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I../tor  -I../tor/src -I../tor/src/ext -I../tor/src/ext/trunnel -I../tor/src/trunnel -I../tor/src/ext -Isrc/ext -DSHARE_DATADIR="\"/usr/share\"" -DLOCALSTATEDIR="\"/usr/var\"" -DBINDIR="\"/usr/bin\"" -I../UPSTREAM/usr/include -I../UPSTREAM/usr/include -I../UPSTREAM/usr/include  -g -O2 -Wno-error=redundant-decls -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector-all -Wstack-protector -fasynchronous-unwind-tables -Wall -fno-strict-aliasing -Waddress -Warray-bounds -Wdouble-promotion -Wextra -Winit-self -Wlogical-op -Wmissing-field-initializers -Wmissing-format-attribute -Wmissing-noreturn -Woverlength-strings -Woverride-init -Wshadow -Wsync-nand -Wtrampolines -Wunused-but-set-parameter -Wunused-but-set-variable -Wunused-local-typedefs -Wvariadic-macros -W -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat=2 -Wwrite-strings -Wnested-externs -Wbad-function-cast -Wswitch-enum -Waggregate-return -Wpacked -Wunused -Wunused-parameter  -Wold-style-definition -Wmissing-declarations -Werror -MT src/lib/err/torerr.o -MD -MP -MF $depbase.Tpo -c -o src/lib/err/torerr.o ../tor/src/lib/err/torerr.c &&\
18:59:29 	mv -f $depbase.Tpo $depbase.Po
18:59:29 ../tor/src/lib/err/torerr.c:35:57: error: 'STDERR_FILENO' undeclared here (not in a function)
18:59:29 make[1]: *** [src/lib/err/torerr.o] Error 1