Martin Povišer 0434f9d3d1 booth: Fix vacancy check when summing down result ...

In commit fedd12261 ("booth: Move away from explicit `Wire` pointers")
a bug was introduced when checking for vacant slots in arrays holding
some intermediate results. Non-wire SigBit values were taken to imply
a vacant slot, but actually a constant one can make its way into those
results, if the multiplier cell configuration is just right. Fix the
vacancy check to address the bug.

2023-10-04 23:21:40 +02:00

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