patch 9.1.1389: completion: still some issue when 'isexpand' contains a space

Problem:  Cannot get completion startcol when space is not the first
          trigger character (after v9.1.1383)
Solution: Detect the next comma followed by a space in the option string
          and use in next compare loop (glepnir)

closes: #17311

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 89c9fb0..9866399 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1389,
+/**/
     1388,
 /**/
     1387,