patch 8.2.4449: vim9: function argument of sort() not checked at compile time

Problem:    vim9: function argument of sort() not checked at compile time.
Solution:   Add a compile time check.
diff --git a/src/version.c b/src/version.c
index 1c99de5..2cc4155 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4449,
+/**/
     4448,
 /**/
     4447,