bug: memory overrun on big endian systems

[mpichbot]

Originally by [email protected] on 2015-02-16 09:27:54 -0600

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We discovered an issue with memory overrun:

dev\src\mpi\debugger\dll_mpich.c:1146 | fetch_int16() 
Array '&res' of size 2 may use index value(s) 2..6 

I can see the issue is relevant for big endian systems.