[svn-r3337]

Purpose:
    Small bug fix
Description:
    A stub function has returned type hsize_t but returns -1.
Solution:
    Changed returned value from -1 to 0
Platforms tested:
    Solaris (arabica)

c++/src/H5DataSet.cpp

@@ -102,7 +102,7 @@ hsize_t DataSet::getVlenBufSize( DataType& type, DataSpace& space ) const
    //{
       //throw DataSetIException();
    //}
-   return (-1);
+   return (0);
 }
 
 // Reclaims VL datatype memory buffers.