patch 9.0.1636: expanding a pattern interferes with cmdline completion

Problem:    Expanding a pattern interferes with command line completion.
Solution:   Set the file index only when appropriate. (closes #12519)

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1636,
 /**/
     1635,
 /**/