patch 8.2.2835: Vim9: leaking memory in :cexpr

Problem:    Vim9: leaking memory in :cexpr.
Solution:   Also free the command line copy.
diff --git a/src/version.c b/src/version.c
index 101036f..9b53528 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2835,
+/**/
     2834,
 /**/
     2833,