qemu: Free all driver data in qemuStateCleanup

https://bugzilla.redhat.com/show_bug.cgi?id=1011330 (case A)

While activeScsiHostdevs and webSocketPorts were allocated in
qemuStateInitialize, they were not freed in qemuStateCleanup.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

src/qemu/qemu_driver.c

@@ -986,12 +986,14 @@ qemuStateCleanup(void) {
     virObjectUnref(qemu_driver->activePciHostdevs);
     virObjectUnref(qemu_driver->inactivePciHostdevs);
     virObjectUnref(qemu_driver->activeUsbHostdevs);
+    virObjectUnref(qemu_driver->activeScsiHostdevs);
     virHashFree(qemu_driver->sharedDevices);
     virObjectUnref(qemu_driver->caps);
     virQEMUCapsCacheFree(qemu_driver->qemuCapsCache);
 
     virObjectUnref(qemu_driver->domains);
     virObjectUnref(qemu_driver->remotePorts);
+    virObjectUnref(qemu_driver->webSocketPorts);
 
     virObjectUnref(qemu_driver->xmlopt);