patch 9.0.0487: using freed memory with combination of closures

Problem:    Using freed memory with combination of closures.
Solution:   Do not use a partial after it has been freed through the
            funcstack.
diff --git a/src/version.c b/src/version.c
index 2ce61d5..a8d0f48 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    487,
+/**/
     486,
 /**/
     485,