Fix typo

src/components/views/room_settings/AliasSettings.js

@@ -263,7 +263,7 @@ module.exports = React.createClass({
                     className={"mx_RoomSettings_localAliases"}
                     items={this.state.domainToAliases[localDomain] || []}
                     newItem={this.state.newAlias}
-                    onNewItemChanged={onNewAliasChanged}
+                    onNewItemChanged={this.onNewAliasChanged}
                     onItemAdded={this.onLocalAliasAdded}
                     onItemEdited={this.onLocalAliasChanged}
                     onItemRemoved={this.onLocalAliasDeleted}