add scopeId as long as there is scoped CSS

Author: yyx990803

lib/loader.js

@@ -180,10 +180,11 @@ module.exports = function (content) {
     exports +=
       '__vue_options__.render = __vue_template__.render\n' +
       '__vue_options__.staticRenderFns = __vue_template__.staticRenderFns\n'
-    // attach scoped id
-    if (hasScoped) {
-      exports += '__vue_options__._scopeId = "' + moduleId + '"\n'
-    }
+  }
+
+  // attach scoped id
+  if (hasScoped) {
+    exports += '__vue_options__._scopeId = "' + moduleId + '"\n'
   }
 
   if (!query.inject) {