patch 8.2.3550: completion() does not work properly

Problem:    completion() does not work properly.
Solution:   Set xp_line and add WILD_HOME_REPLACE. (Shougo Matsushita,
            closes #9016)

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3550,
 /**/
     3549,
 /**/