[tdf#42982]Improve runtimeException's Message

Change-Id: Ieb1bc302c2c1093561082704e26e3ff3b648db91
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/122902
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>
diff --git a/vbahelper/source/vbahelper/vbaeventshelperbase.cxx b/vbahelper/source/vbahelper/vbaeventshelperbase.cxx
index 1396c93c..8c8515d 100644
--- a/vbahelper/source/vbahelper/vbaeventshelperbase.cxx
+++ b/vbahelper/source/vbahelper/vbaeventshelperbase.cxx
@@ -277,7 +277,7 @@ OUString VbaEventsHelperBase::getEventHandlerPath( const EventHandlerInfo& rInfo
        break;

        default:
            throw uno::RuntimeException(); // unsupported module type
            throw uno::RuntimeException("This module type is unsupported"); // unsupported module type
    }

    /*  Performance improvement: Check the list of existing event handlers