Ticket #306 - void function cannot return value

Bug Description:  slapi_attr_value_normalize() was trying to return
                   slapi_attr_value_normalize_ext().

Fix Description:  Instead of returning the function, we just call it.
                  Currently this function is not being used by the DS,
                  but it should be fixed.

https://fedorahosted.org/389/ticket/306

ldap/servers/slapd/plugin_syntax.c

@@ -991,5 +991,5 @@ slapi_attr_value_normalize(
 	char **retval
 )
 {
-	return slapi_attr_value_normalize_ext(pb, sattr, type, val, trim_spaces, retval, 0);
+	slapi_attr_value_normalize_ext(pb, sattr, type, val, trim_spaces, retval, 0);
 }