Log Message:
-----------
Added casts when parameter is null. This was causing problems with prepare statements when parameter type was set to a value other than DbType.Object and its value was set to null. The prepare statement wasn't receiving the cast. Thanks Waldemar Bergstreiser (wbr at bergstreiser dot com) for heads up.
Modified Files:
--------------
Npgsql2/src/Npgsql:
NpgsqlParameter.cs (r1.17 -> r1.18)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/NpgsqlParameter.cs.diff?r1=1.17&r2=1.18)