patch 9.1.1222: using wrong length for last inserted string

Problem:  using wrong length for last inserted string
          (Christ van Willegen, after v9.1.1212)
Solution: use the correct length in get_last_insert_save(), make
          get_last_insert() return a string_T (John Marriott)

closes: #16921

Signed-off-by: John Marriott <basilisk@internode.on.net>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 12a7f45..ee5b5ed 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1222,
+/**/
     1221,
 /**/
     1220,