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zfsinfo: Correct a check for error allocating memory

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While arguably the check for grub_errno is correct, we should really be
checking the return value from the function since it is always possible
that grub_errno was set elsewhere, making this code behave incorrectly.

Fixes: CID 73668

Signed-off-by: Darren Kenny <darren.kenny@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Darren Kenny authored and Daniel Kiper committed 2021-03-02 15:54:16 +01:00
1 parent 302c12ff57
commit 7aab03418e
1 file changed
+2 -2
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grub-core/fs/zfs/zfsinfo.c
+2 -2
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@@ -358,8 +358,8 @@ grub_cmd_zfs_bootfs (grub_command_t cmd __attribute__ ((unused)), int argc,
return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("one argument expected")); return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("one argument expected"));
devname = grub_file_get_device_name (args[0]); devname = grub_file_get_device_name (args[0]);
if (grub_errno) if (devname == NULL)
return grub_errno; return GRUB_ERR_OUT_OF_MEMORY;
dev = grub_device_open (devname); dev = grub_device_open (devname);
grub_free (devname); grub_free (devname);