qemu: blockjob: Make sure that internal states are not reported as event

While the callers should make sure that they don't call
qemuBlockJobEmitEvents for any internal state or job, let's add checks
that prevents us from emitting wrong events altogether.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>
Reviewed-by: NJohn Ferlan <jferlan@redhat.com>

src/qemu/qemu_blockjob.c

@@ -214,6 +214,11 @@ qemuBlockJobEmitEvents(virQEMUDriverPtr driver,
     virObjectEventPtr event = NULL;
     virObjectEventPtr event2 = NULL;
 
+    /* don't emit events for internal jobs and states */
+    if (type >= VIR_DOMAIN_BLOCK_JOB_TYPE_LAST ||
+        status >= VIR_DOMAIN_BLOCK_JOB_LAST)
+        return;
+
     if (virStorageSourceIsLocalStorage(disk->src) &&
         !virStorageSourceIsEmpty(disk->src)) {
         event = virDomainEventBlockJobNewFromObj(vm, virDomainDiskGetSource(disk),