patch 9.1.1516: tests: no test that 'incsearch' is updated after search completion

Problem:  tests: no test that 'incsearch' is updated after accepting
          search completion.
Solution: Add a test case (zeertzjq).

closes: #17682

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index f9e0bea..6b9d934 100644
--- a/src/version.c
+++ b/src/version.c
@@ -720,6 +720,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1516,
+/**/
     1515,
 /**/
     1514,