Index: webform.install
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/webform/webform.install,v
retrieving revision 1.40.2.20
diff -u -r1.40.2.20 webform.install
--- webform.install	17 Oct 2010 20:16:06 -0000	1.40.2.20
+++ webform.install	17 Oct 2010 21:03:01 -0000
@@ -1241,6 +1241,18 @@
 }
 
 /**
+ * Set additional_validate and additional_submit columns to allow NULL.
+ */
+function webform_update_6322() {
+  $ret = array();
+  if (db_column_exists('webform', 'additional_validate')) {
+    db_change_field($ret, 'webform', 'additional_validate', 'additional_validate', array('type' => 'text', 'not null' => FALSE));
+    db_change_field($ret, 'webform', 'additional_submit', 'additional_submit', array('type' => 'text', 'not null' => FALSE));
+  }
+  return $ret;
+}
+
+/**
  * Recursively delete all files and folders in the specified filepath, then
  * delete the containing folder.
  *