dba33e: #i107472# correct class param for ConnectionTools

reportbuilder/java/com/sun/star/report/pentaho/PentahoReportJob.java

@@ -375,7 +375,7 @@ public class PentahoReportJob implements ReportJob
         catch (final Exception e)
         {
             String message = e.getMessage();
-            if (message.length() == 0)
+            if (message == null || message.length() == 0)
             {
                 message = "Failed to process the report";
             }