CA-153279: don't complain if there's no tapdisk to signal #145
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When rotating tapdisk logs we blindly tell all tapdisks (even if no
tapdisk exists) to refresh their logs. If no tapdisk exists, an error
message will be logged in /root/dead.letter, which might lead to dom0
root file-system free space implications.
Signed-off-by: Thanos Makatos thanos.makatos@citrix.com