[Chicken-hackers] [PATCH] Make fx*? aware of non-fixnum operands

[lemonboy]

Hello hackers,
I've just finished debugging a silly yet subtle bug where expressions like
`(fx*? 1 (fx*? #xffffffff #xffffffff))` would evaluate to 3 instead of #f.
Attached is a patch that makes `fx*?` aware of non-fixnum arguments and
makes it behave like the other `fx?` operators and return #f.
The .patch is made against the chicken-5 branch and I think applies cleanly
to master.

Cheers,
Lemonboy

0001-Make-fx-aware-of-non-fixnum-arguments.patch
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