We store the flags passed to the API which started QEMU_ASYNC_JOB_DUMP
and we can use them to check whether a memory-only dump is running.
There's no need for a specific bool flag.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>