patch 7.4.1379

Problem:    Channel test fails on Win32 console.
Solution:   Don't sleep when timeout is zero. Call channel_wait() before
            channel_read(). Channels are not polled during ":sleep". (Yukihiro
            Nakadaira)

src/version.c

@@ -747,6 +747,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1379,
 /**/
     1378,
 /**/