[RFA] Fix gdb compilation error in opcodes/dlx-dis.c with --enable-targets=all for mingw64

[Andreas Schwab]

"Pierre Muller" <pierre.muller@ics-cnrs.unistra.fr> writes:

>   'unsigned long' type is 4-byte
> on x86_64-w64-mingw systems, which is less
> than a pointer size.
>   After some searching, I found bfd_hostptr_t
> type that is supposed to have the correct size of a host 
> pointer.

What's wrong with dlx_insn?

Andreas.

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Andreas Schwab, schwab@linux-m68k.org
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