patch 8.0.0297: double free on exit when using a closure

Problem:    Double free on exit when using a closure. (James McCoy)
Solution:   Split free_al_functions in two parts. (closes #1428)
diff --git a/src/version.c b/src/version.c
index d7d3948..c85a57f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -765,6 +765,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    297,
+/**/
     296,
 /**/
     295,