fix untested stuff with iframe homepages

src/components/structures/HomePage.js

@@ -38,15 +38,18 @@ module.exports = React.createClass({
 
     getInitialState: function() {
         return {
-            page: ""
+            iframeSrc: '',
+            page: '',
         };
     },
 
     componentWillMount: function() {
         if (this.props.teamToken && this.props.teamServerUrl) {
-            return;
+            this.setState({
+                iframeSrc: `${this.props.teamServerUrl}/static/${this.props.teamToken}/home.html`
+            });
         }
-
+        else {
             // we use request() to inline the homepage into the react component
             // so that it can inherit CSS and theming easily rather than mess around
             // with iframes and trying to synchronise document.stylesheets.
@@ -61,21 +64,17 @@ module.exports = React.createClass({
                         this.setState({ page: "Couldn't load home page" });
                     }
 
-                // We parse the JSON ourselves rather than use the JSON
-                // parameter, since this throws a parse error on empty
-                // which breaks if there's no config.json and we're
-                // loading from the filesystem (see above).
                     this.setState({ page: body });
                 }
             );
+        }
     },
 
     render: function() {
-        if (this.props.teamToken && this.props.teamServerUrl) {
-            src = `${this.props.teamServerUrl}/static/${this.props.teamToken}/home.html`;
+        if (this.state.iframeSrc) {
             return (
                 <div className="mx_HomePage">
-                    <iframe src={ src } />
+                    <iframe src={ this.state.iframeSrc } />
                 </div>
             );
         }