Update to address user creation on non-multisite blog. refs #784

@@ -169,7 +169,7 @@ function register($username, $email, $password, $meta = Array()) {
  * @see wpmu_activate_signup
  */
 function activate($key, $password_validation = null) {
-    global $wpdb, $current_blog;
+    global $wpdb;
     $signup = $wpdb->get_row($wpdb->prepare("SELECT * FROM {$wpdb->signups} WHERE activation_key = %s", $key));
 
     if (empty($signup)) {
@@ -200,14 +200,21 @@ function activate($key, $password_validation = null) {
 
     $wpdb->update($wpdb->signups, Array('active' => 1, 'activated' => current_time('mysql', true)), Array('activation_key' => $key));
 //    $user_site = get_site_option('dashboard_blog', $current_site->blog_id);
+
+    if (function_exists('add_user_to_blog')) {
+        global $current_blog;
         add_user_to_blog($current_blog->blog_id, $id, get_site_option('default_user_role', 'subscriber'));
+    } else {
+        $user = new WP_User($id);
+        $user->add_role(get_site_option('default_role', 'subscriber'));
+    }
 
     // If use these, fix variables, they're wrong
     //add_new_user_to_blog( $id, $user_email, $meta );
     //do_action(ACTION_ACTIVATE, $id, $password, $meta);
 
     // If more than the password was sent in meta, have it generate user_meta for each key=>val pair
-    foreach($meta as $key=>$val) {
+    foreach($meta as $key => $val) {
         update_user_meta($id, $key, $val);
     }