[patch] xfsprogs: repair never return if device removed

[Ajeet Yadav]

xfsprogs all version, delete primary superblock of xfs partition

dd if=/dev/zero of=/dev/sda1 bs=512 count=1
sync

Run xfs_repair in partition, while its searching for secondary superblock,
remove the disk (USB) xfs_repair will never exit and will loop in never
ending ............

Please find patch attached with mail
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