Skip empty blocks in contact form

program/steps/addressbook/func.inc

@@ -666,8 +666,10 @@ function rcmail_contact_form($form, $record, $attrib = null)
                     }
                 }
 
+                if ($fields) {
                     $content .= html::div($block_attr, $fields);
                 }
+            }
 
             if ($edit_mode) {
                 $content .= html::p('addfield', $select_add->show(null));