Pass id to the site-users and site-themes search form. props ocean90, fixes #16246.

git-svn-id: http://svn.automattic.com/wordpress/trunk@17314 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/network/site-themes.php

@@ -162,6 +162,7 @@ if ( isset( $_GET['enabled'] ) ) {
 
 <form method="get" action="">
 <?php $wp_list_table->search_box( __( 'Search Installed Themes' ), 'theme' ); ?>
+<input type="hidden" name="id" value="<?php echo esc_attr( $id ) ?>" />
 </form>
 
 <?php $wp_list_table->views(); ?>

wp-admin/network/site-users.php

@@ -218,6 +218,7 @@ endif; ?>
 
 <form class="search-form" action="" method="get">
 <?php $wp_list_table->search_box( __( 'Search Users' ), 'user' ); ?>
+<input type="hidden" name="id" value="<?php echo esc_attr( $id ) ?>" />
 </form>
 
 <?php $wp_list_table->views(); ?>