patch 8.2.3241: Vim9: memory leak when function reports an error

Problem:    Vim9: memory leak when function reports an error.
Solution:   Clear the return value.
diff --git a/src/version.c b/src/version.c
index 13b6425..897e3fb 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3241,
+/**/
     3240,
 /**/
     3239,