at *m_aValue.m_pValue.
But there could not even be a pointer there, e.g. if m_aValue.m_nIntXX is in use.
Then the pointer dereference usually leads to a crash.
Can e.g. be reproduced by calling getBytes() on an integer column of a RowSet.

Change-Id: Ib5361d838d2869142fd797d4e3454e2562ea7acf