patch 8.2.1161: Vim9: using freed memory

Problem:    Vim9: using freed memory.
Solution:   Put pointer back in evalarg instead of freeing it.

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1161,
 /**/
     1160,
 /**/