0038435: ad_get_preference_value function shows a warning: record "selpref" is not assigned yet

--- a/src-db/database/model/functions/AD_GET_PREFERENCE_VALUE.xml	Fri Mar 30 20:38:22 2018 -0400
+++ b/src-db/database/model/functions/AD_GET_PREFERENCE_VALUE.xml	Mon Apr 23 17:20:41 2018 +0200
@@ -34,7 +34,7 @@
 * under the License.
 * The Original Code is Openbravo ERP.
 * The Initial Developer of the Original Code is Openbravo SLU
-* All portions are Copyright (C) 2010 Openbravo SLU
+* All portions are Copyright (C) 2010-2018 Openbravo SLU
 * All Rights Reserved.
 * Contributor(s):  ______________________________________.
 ************************************************************************/
@@ -63,8 +63,8 @@
   else
     v_ad_org_id := p_ad_org_id;
   end if;
-  
-  
+
+  select * into selPref from ad_preference where ad_preference_id = null;
   for cur in 
        (select *
           from ad_preference