Oleg Vasilev 7b793a00bd util: don't validate empty params
If there are no parameters, there is nothing to validate.
If params == NULL, memcpy below results in memcpy(sorted, NULL, 0),
which is UB.

Found by UBSAN. Example of this codepath: virDomainBlockCopy()
(where nparams == 0 is valid) -> qemuDomainBlockCopy()

Signed-off-by: Oleg Vasilev <oleg.vasilev@virtuozzo.com>
Reviewed-by: Kristina Hanicova <khanicov@redhat.com>
2023-06-26 14:19:18 +02:00
..
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