math/big: TestBytes may fail (false negative)

[neelance]

If quick.Check generates a byte slice that starts with 0x0, then SetBytes accepts this slice, but Bytes correctly returns the slice without the leading zero. This makes the test fail.

[neelance]

For context: I see this issue with my GopherJS compiler, since for some reason it generates different values with math/rand which affects testing/quick.

[gopherbot]

CL https://golang.org/cl/13814 mentions this issue.