fix: handle 0 for inverting eip155 parity. #633
Merged
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Motivation
As mentioned in #630 , there is a corner case for inverting parity with value of Eip155(0). Program will try to return Eip155(-1) which is panic issue.
Solution
One should handle the 0 case separately and return Eip155(1) as the inverted output.
PR Checklist