Additional fix for issue 4181: NPE in DSML search requests.

sin

29.58.2009 741434f68eb3494bb222f4386d56ce0acb32a1c6

 opends/src/messages/messages/protocol.properties

@@ -1419,4 +1419,6 @@
MILD_ERR_ECLN_CANNOT_DECODE_VALUE_1510=Cannot decode the provided entry \
 changelog notification control because an error occurred while attempting to \
 decode the control value:  %s
SEVERE_ERR_UNEXPECTED_CONNECTION_CLOSURE_1511=The connection to the Directory \
Server was closed while waiting for a response