Crash during datatype reconstruction of XEX file

[mg8973]

This is a continuation of the issue #1168, where Reko can successfully generate intermediate code from the executable. However, now the program will crash during its final decompilation stage where it reconstructs the data types, once again without displaying any errors or exceptions beforehand.

[uxmal]

I'm unable to reproduce this with my XEX sample, so it may be an issue that your XEX file triggers. Could you find a way to provide me with it? Also, Reko generates a directory where it stores disassembly + decompiled files. There may be some *.tests files that might provide more diagnostic information.