backups: ignore EPIPE on pipe.close()
backups: ignore EPIPE on pipe.close()

This is most likely some padding left in output buffer. See #764
comments for details.

marmarek/qubes-core-admin,QubesOS/qubes-core-admin,marmarek/qubes-core-admin,QubesOS/qubes-core-admin,woju/qubes-core-admin,marmarek/qubes-core-admin,QubesOS/qubes-core-admin,woju/qubes-core-admin,woju/qubes-core-admin,woju/qubes-core-admin