patch 8.2.2189: cannot repeat a command that uses the small delete register

Problem:    Cannot repeat a command that uses the small delete register.
Solution:   Store the register name instead of the contents. (Christian
            Brabandt, closes #7527)
diff --git a/src/ops.c b/src/ops.c
index 53bd084..d8e96ff 100644
--- a/src/ops.c
+++ b/src/ops.c
@@ -9,7 +9,7 @@
 
 /*
  * ops.c: implementation of various operators: op_shift, op_delete, op_tilde,
- *	  op_change, op_yank, do_put, do_join
+ *	  op_change, op_yank, do_join
  */
 
 #include "vim.h"