patch 8.2.3433: :delcommand does not take a -buffer option

Problem:    :delcommand does not take a -buffer option.
Solution:   Add the -buffer option.
diff --git a/src/version.c b/src/version.c
index 7d87105..e8e5bc4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3433,
+/**/
     3432,
 /**/
     3431,