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)
diff --git a/src/version.c b/src/version.c
index 2665c51..6a70e21 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1636,
+/**/
     1635,
 /**/
     1634,