060b16f987
b815aa021c added a yield before
the trace point, causing the moved `frozen_mutation_and_schema`
(and `inet_address_vector_topology_change`) to drop out of scope
and be destroyed, as the rvalue-referenced objects aren't moved
onto the coroutine frame.
This change passes them by value rather than by rvalue-reference
so they will be stored in the coroutine frame.
Fixes #16540
Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
Closes scylladb/scylladb#16541