devel/nspr: Fails to build on 1500008 5f71f9636efa

Hello all,

From 1500007 to 1500008 devel/nspr (dependency of firefox) fails:

###
cc -o prmapopt.o -c -fvisibility=hidden    -O2 -pipe
 -fstack-protector-strong -fno-strict-aliasing   -ansi -Wall -fPIC  -UDEBUG
-DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\" -DPACKAGE_VERSION=\"\"
-DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\" -DPACKAGE_URL=\"\"
-DNDEBUG=1 -DHAVE_VISIBILITY_HIDDEN_ATTRIBUTE=1 -DHAVE_VISIBILITY_PRAGMA=1
-DXP_UNIX=1 -DFREEBSD=1 -DHAVE_BSD_FLOCK=1 -DHAVE_SOCKLEN_T=1
-DHAVE_POINTER_LOCALTIME_R=1 -DHAVE_DLADDR=1 -DHAVE_LCHOWN=1
-DHAVE_SETPRIORITY=1 -DHAVE_STRERROR=1 -DHAVE_SYSCALL=1
-DHAVE_SECURE_GETENV=1 -D_REENTRANT=1 -D_THREAD_SAFE=1 -DFORCE_PR_LOG
-D_PR_PTHREADS -UHAVE_CVAR_BUILT_ON_SEM -D_NSPR_BUILD_
-I../../../dist/include/nspr -I../../../pr/include
-I../../../pr/include/private  prmapopt.c
In file included from prmapopt.c:46:
/usr/include/netinet/tcp.h:82:8: error: unknown type name 'inline'
   82 | static inline uint16_t
      |        ^
/usr/include/netinet/tcp.h:82:23: error: expected ';' after top level
declarator
   82 | static inline uint16_t
      |                       ^
/usr/include/netinet/tcp.h:88:8: error: unknown type name 'inline'
   88 | static inline void
      |        ^
3 errors generated.
###

Any clues?
-- 
Nuno Teixeira
FreeBSD Committer (ports)