patch 8.2.0824: still not enough memory allocated when converting string

Problem:    Still not enough memory allocated when converting string with
            special character.
Solution:   Reserve space for expanding K_SPECIAL. (closes #6130)
diff --git a/src/version.c b/src/version.c
index c4648f7..ce5f627 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    824,
+/**/
     823,
 /**/
     822,