Fix MSVC build.

The new file in src/port needs to be listed in Mkvcbuild.pm as well.

src/tools/msvc/Mkvcbuild.pm

@@ -70,7 +70,7 @@ sub mkvcbuild
 	  srandom.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
 	  pgcheckdir.c pg_crc.c pgmkdirp.c pgsleep.c pgstrcasecmp.c qsort.c qsort_arg.c quotes.c
-	  sprompt.c tar.c thread.c getopt.c getopt_long.c dirent.c rint.c win32env.c
+	  sprompt.c tar.c thread.c wait_error.c getopt.c getopt_long.c dirent.c rint.c win32env.c
 	  win32error.c win32setlocale.c);
 
 	our @pgcommonallfiles = qw(