patch 8.2.4451: sort() fails when ignoring case

Problem:    sort() fails when ignoring case.
Solution:   Accept a number one argument in sort().
diff --git a/src/version.c b/src/version.c
index 5dfdaf4..6f91b84 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4451,
+/**/
     4450,
 /**/
     4449,