"chainloader" command prints unexpected debugging line "/EndEntire"

Description of problem:

With 9.1 code based on 2.06 code, using the "chainloader" commands ends up having a weird "/EndEntire" line being printed:
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
grub> chainloader /grubx64.efi
/EndEntire
grub> boot
Minimal BASH-like line editing is supported. For the first word, TAB lists possible
command completions. Anywhere else TAB lists possible device or file completions.

grub>
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------

This happens because of the line 213 calling grub_efi_print_device_path():
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------
158 static grub_efi_device_path_t *
159 make_file_path (grub_efi_device_path_t *dp, const char *filename)
160 {
:
210 /* Fill the file path for the directory. */
211 d = (grub_efi_device_path_t *) ((char *) file_path
212 + ((char *) d - (char *) dp));
213 grub_efi_print_device_path (d);
214 if (copy_file_path ((grub_efi_file_path_device_path_t *) d,
215 dir_start, dir_end - dir_start) != GRUB_ERR_NONE)
216 {
:

573 /* Print the chain of Device Path nodes. This is mainly for debugging. */
574 void
575 grub_efi_print_device_path (grub_efi_device_path_t *dp)
576 {
:
588 case GRUB_EFI_END_ENTIRE_DEVICE_PATH_SUBTYPE:
589 grub_printf ("/EndEntire\n");
:
-------- 8< ---------------- 8< ---------------- 8< ---------------- 8< --------

Version-Release number of selected component (if applicable):

grub2-2.06-46.el9

How reproducible:

Always, see above