block-snapshot: remove trailing spaces

Forward-ported from qubes-core-agent-linux:

    commit 2eb0ed2be14350d6df1fce2af855805133a4a416
    Author: Patrick Schleizer <adrelanos@riseup.net>
    Date:   Thu Oct 15 04:34:55 2015 +0200

        removed trailing spaces
This commit is contained in:
Rusty Bird 2018-01-16 06:19:58 +00:00
parent 9dade5c219
commit 342c36ed36
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