Revision: 270871: kernel build failure due to: [...]/netmap.c:556:23: error: no member named 'if_pspare' in 'struct ifnet'

cc  -c -O3 -fno-strict-aliasing -march=native -std=c99  -Wall -Wredundant-decls
-Wnested-externs -Wstrict-prototypes  -Wmissing-prototypes -Wpointer-arith -Winline
-Wcast-qual  -Wundef -Wno-pointer-sign -fformat-extensions  -Wmissing-include-dirs
-fdiagnostics-show-option  -Wno-error-tautological-compare -Wno-error-empty-body
-Wno-error-parentheses-equality -Wno-error-unused-function -nostdinc  -I. -I/usr/src/sys
-I/usr/src/sys/contrib/altq -I/usr/src/sys/contrib/libfdt -D_KERNEL
-DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h  -fno-omit-frame-pointer
-mno-omit-leaf-frame-pointer -mcmodel=kernel -mno-red-zone -mno-mmx -mno-sse
-msoft-float  -fno-asynchronous-unwind-tables -ffreestanding -fstack-protector -mno-aes
-mno-avx
-Werror  /usr/src/sys/dev/netmap/netmap.c /usr/src/sys/dev/netmap/netmap.c:556:23: error:
no member named 'if_pspare' in 'struct ifnet' netmap_set_all_rings(NA(ifp), 1 /* stopped
*/);