vmware: Properly clean up in vmwareDomainLookupByName

The virDomainObjListFindByName returns a locked and reffed
domain object, all we did was unlock it, leaving an extra
ref. Use the virDomainObjEndAPI to cleanup instead.
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>
Reviewed-by: NPavel Hrdina <phrdina@redhat.com>

src/vmware/vmware_driver.c

@@ -922,8 +922,7 @@ vmwareDomainLookupByName(virConnectPtr conn, const char *name)
     dom = virGetDomain(conn, vm->def->name, vm->def->uuid, vm->def->id);
 
  cleanup:
-    if (vm)
-        virObjectUnlock(vm);
+    virDomainObjEndAPI(&vm);
     return dom;
 }