Ryan Moeller b8adbe1c15 efibootmgr: Use returned error code for error message, not errno
efivar_unix_path_to_device_path returns the error code, it does not set errno.

Reviewed by:	imp
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D26852
2020-10-19 10:38:40 +00:00
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