event-test: Enforce domain event sync

Use verify to force adding new events by means of static assertions.

examples/object-events/event-test.c

@@ -6,6 +6,8 @@
 #include <signal.h>
 #include <inttypes.h>
 
+#include <verify.h>
+
 #define VIR_ENUM_SENTINELS
 
 #include <libvirt/libvirt.h>
@@ -887,6 +889,9 @@ struct domainEventData domainEvents[] = {
     DOMAIN_EVENT(VIR_DOMAIN_EVENT_ID_DEVICE_REMOVAL_FAILED, myDomainEventDeviceRemovalFailedCallback),
 };
 
+/* make sure that the events are kept in sync */
+verify(ARRAY_CARDINALITY(domainEvents) == VIR_DOMAIN_EVENT_ID_LAST);
+
 int
 main(int argc, char **argv)
 {