patch 8.1.0796: MS-Windows 7: problem with named pipe on channel

Problem:    MS-Windows 7: problem with named pipe on channel.
Solution:   Put back the disconnect/connect calls. (Yasuhiro Matsumoto,
            closes #3833)
diff --git a/src/version.c b/src/version.c
index 91b3542..a4decba 100644
--- a/src/version.c
+++ b/src/version.c
@@ -792,6 +792,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    796,
+/**/
     795,
 /**/
     794,