fix: auto-complete custom input

Author: tangjinzhou

components/auto-complete/index.jsx

@@ -73,10 +73,13 @@ const AutoComplete = {
       this.select = node;
     },
     getInputElement() {
-      const { placeholder } = this;
       const children = getSlot(this);
       const element = children.length ? children[0] : <Input lazy={false} />;
-      return <InputElement placeholder={placeholder}>{element}</InputElement>;
+      return (
+        <InputElement placeholder={this.placeholder} {...element.props}>
+          {element}
+        </InputElement>
+      );
     },
 
     focus() {

components/vc-select/Select.jsx

@@ -775,7 +775,7 @@ const Select = {
       );
 
       const inputElement = props.getInputElement ? props.getInputElement() : defaultInput;
-      const inputCls = classnames(inputElement.class, {
+      const inputCls = classnames(inputElement.props && inputElement.props.class, {
         [`${props.prefixCls}-search__field`]: true,
       });
       const inputEvents = getEvents(inputElement);