Tunnel SQLException through getPropertyValue

Regression introduced with 03a2b4a80c5854bcb8520f2a43e485b98e3eba8f "fdo#82151
when constructing column object, replace m_aCurrentRow by a function," where
the other call to m_pGetValue in ORowSetDataColumn::fireValueChange appears OK,
as ORowSetBase::firePropertyChange already wraps the fireValueChange calls in a
try--catch.

Change-Id: I527cc35ae120cf083f7c69a9a23526839a2bbddb