patch 9.1.1242: Crash when evaluating variable name

Problem:  Crash when evaluating variable name (after v9.1.0870)
Solution: calculate the strlen() directly instead of pointer
          arithmetics, fix missing assignment to lp->ll_name_end in
          get_lval() (zeertzjq)

closes: #16972
fixes: vim-airline/vim-airline#2710
related: #16066

Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 63214b6..db9588e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1242,
+/**/
     1241,
 /**/
     1240,