fs/zfs: Add missing NULL check after grub_strdup() call

Signed-off-by: Lidong Chen <lidong.chen@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

diff --git a/grub-core/fs/zfs/zfs.c b/grub-core/fs/zfs/zfs.c
index 6a964974f4d4f391edb4c6f93ddab9a4eb9afd42..3760426318fd300ffde6d798c9330e28b3a3776f 100644 (file)
--- a/grub-core/fs/zfs/zfs.c
+++ b/grub-core/fs/zfs/zfs.c
@@ -3349,6 +3349,8 @@ dnode_get_fullpath (const char *fullpath, struct subvolume *subvol,
       filename = 0;
       snapname = 0;
       fsname = grub_strdup (fullpath);
+      if (!fsname)
+       return grub_errno;
     }
   else
     {