libzfsbootenv: lzbe_set_boot_device(): don't free undefined pointer
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #11993
libzfsbootenv: lzbe_set_boot_device(): don't free undefined pointer Tags None Referenced Files None Subscribers None
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