fix: selectRef error

Amour1688 · Amour1688 · commit 16224a1d4706 · 2020-10-24T09:33:37.000+08:00
diff --git a/components/select/index.tsx b/components/select/index.tsx
@@ -123,6 +123,7 @@ const Select = defineComponent({
       emit('change', ...args);
     };
     return {
+      selectRef,
       mergedClassName,
       mode,
       focus,
