[MPICH] Warnings during compilation.

[Nico Kruithof]

Hello,

Is there anything I can do to avoid warnings like:
/opt/mpich/include/mpi2c++/pcomm.h:59: warning: 'class PMPI::Comm' has
virtual functions but non-virtual destructor

which probably means that Comm has a default destructor instead of a
virtual destructor.

Thanks in advance,
Nico