patch 7.4.1230

Problem:    Win32: opening a channel may hang.  Not checking for messages
            while waiting for characters.
Solution:   Add a zero timeout.  Call parse_queued_messages(). (Yasuhiro
            Matsumoto)

src/version.c

@@ -742,6 +742,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1230,
 /**/
     1229,
 /**/