Added check to make sure files are not strings

web/react/components/post_right.jsx

@@ -294,13 +294,8 @@ module.exports = React.createClass({
         var currentId = UserStore.getCurrentId();
         var searchForm = currentId == null ? null : <SearchBox />;
 
-        var fileDragOverlay = '';
-        if (this.state.fileDrag) {
-            fileDragOverlay = 'post-right-file-overlay';
-        }
-
         return (
-            <div className="post-right__container ">
+            <div className="post-right__container">
                 <div className="search-bar__container sidebar--right__search-header">{searchForm}</div>
                 <div className="sidebar-right__body">
                     <RhsHeaderPost fromSearch={this.props.fromSearch} isMentionSearch={this.props.isMentionSearch} />