[Refactor] no-unused-state: combine spread visitors

Author: ljharb

lib/rules/no-unused-state.js

@@ -374,13 +374,7 @@ module.exports = {
         }
       },
 
-      ExperimentalSpreadProperty(node) {
-        if (classInfo && isStateReference(node.argument)) {
-          classInfo = null;
-        }
-      },
-
-      SpreadElement(node) {
+      'ExperimentalSpreadProperty, SpreadElement'(node) {
         if (classInfo && isStateReference(node.argument)) {
           classInfo = null;
         }