Fix Windows builds in back branches.

I missed adding src/port/tar.c to the Windows build files when
back-patching the addition of that file to 9.2 and 9.1.
Per buildfarm.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/tools/msvc/Mkvcbuild.pm b/src/tools/msvc/Mkvcbuild.pm
index ccd328bef7e..da38f1a05c6 100644
--- a/src/tools/msvc/Mkvcbuild.pm
+++ b/src/tools/msvc/Mkvcbuild.pm
@@ -54,7 +54,7 @@ sub mkvcbuild
       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 pgmkdirp.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
+      sprompt.c tar.c thread.c getopt.c getopt_long.c dirent.c rint.c win32env.c
       win32error.c win32setlocale.c mkdtemp.c);
 
     $libpgport = $solution->AddProject('libpgport','lib','misc');