postgresql-sdbc: include error message in SQLException

Change-Id: I9d91503e6beb08f11368fc6b80fefb61f60d4486
Reviewed-on: https://gerrit.libreoffice.org/16342Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Stahl <mstahl@redhat.com>

connectivity/source/drivers/postgresql/pq_preparedstatement.cxx

@@ -329,7 +329,7 @@ void PreparedStatement::raiseSQLException(
     buf.appendAscii( "')" );
     OUString error = buf.makeStringAndClear();
     log( m_pSettings, LogLevel::ERROR, error );
-    throw SQLException( buf.makeStringAndClear(), *this, OUString(), 1, Any() );
+    throw SQLException( error, *this, OUString(), 1, Any() );
 }
 
 Reference< XResultSet > PreparedStatement::executeQuery( )