[Bug 46694] widl crashes in dlls/atl during build on ppc64el

https://bugs.winehq.org/show_bug.cgi?id=46694

--- Comment #1 from Timothy Pearson <tpearson(a)raptorengineering.com> ---
There is a questionable statement in tools/widl/write_msft.c, line 2162:

if (-1 < tunion->typelib_idx)

When widl crashes, typelib_idx is == -1, which as I understand it indicates the
index is invalid?  However, the above statement does not trap the invalid
index.

Changing the statement to read as follows resolves the crash:

if (-1 <= tunion->typelib_idx)

Is this change correct in the context of widl design?

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