network: Move virObjectRef during AssignDef processing

Move the virObjectRef in virNetworkObjAssignDefLocked to after
the virHashAddEntry to make it "clearer" why the @ref is being
incremented. Upon return from the ObjNew we will have 1 ref on
the object already, adding it to the hash table requires the
increment.
Signed-off-by: NJohn Ferlan <jferlan@redhat.com>

src/conf/virnetworkobj.c

@@ -577,10 +577,10 @@ virNetworkObjAssignDefLocked(virNetworkObjListPtr nets,
         virUUIDFormat(def->uuid, uuidstr);
         if (virHashAddEntry(nets->objs, uuidstr, obj) < 0)
             goto cleanup;
+        virObjectRef(obj);
 
         obj->def = def;
         obj->persistent = !(flags & VIR_NETWORK_OBJ_LIST_ADD_LIVE);
-        virObjectRef(obj);
     }
 
     ret = obj;