tests/q35-test: Make test independent of global_qtest

Use a local QTestState variable, so that we can finally get rid
of the undesired global_qtest variable in this file, too.

Message-Id: <20190515174328.16361-3-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
1 file changed