patch 9.1.0028: win32: Ctrl-D cannot be used to close a pipe

Problem:  win32: Ctrl-D cannot be used to close a pipe
Solution: Properly detect Ctrl-D when reading from a pipe
          (GuyBrush)

Enabling Ctrl-D for gvim pipeline input
and apply defensive programming on account of PR #12752
so that once PR 12752 is merged, CTRL-D will keep on working

closes: #13849

Signed-off-by: GuyBrush <miguel.barro@live.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index a17ae15..f01cac8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    28,
+/**/
     27,
 /**/
     26,