Add inet_net_ntop.c as needed by MSVC, per Magnus.

src/tools/msvc/Mkvcbuild.pm

@@ -48,7 +48,7 @@ sub mkvcbuild
 
     our @pgportfiles = qw(
       chklocale.c crypt.c fseeko.c getrusage.c inet_aton.c random.c srandom.c
-      getaddrinfo.c gettimeofday.c kill.c open.c erand48.c
+      getaddrinfo.c gettimeofday.c inet_net_ntop.c kill.c open.c erand48.c
       snprintf.c strlcat.c strlcpy.c dirmod.c exec.c noblock.c path.c pipe.c
       pgsleep.c pgstrcasecmp.c qsort.c qsort_arg.c sprompt.c thread.c
       getopt.c getopt_long.c dirent.c rint.c win32env.c win32error.c);