multiple int overflows on 32 bit arches in s2_test.go

[rathann]

While running tests on Fedora rawhide (32), I get the following test failures:

./s2_test.go:39:4: constant 4294967285 overflows int
./s2_test.go:39:22: constant 4294967295 overflows int
./s2_test.go:40:47: constant 4294967290 overflows int
./s2_test.go:40:65: constant 4294967295 overflows int
./s2_test.go:40:83: constant 4294967295 overflows int
./s2_test.go:41:23: constant 4294967286 overflows int
./s2_test.go:42:23: constant 4294967287 overflows int
./s2_test.go:43:23: constant 4294967288 overflows int
./s2_test.go:44:23: constant 4294967289 overflows int
./s2_test.go:45:23: constant 4294967290 overflows int
./s2_test.go:45:23: too many errors

It looks like similar to #133 .

[rathann]

and one more:

 github.com/klauspost/compress/zstd [github.com/klauspost/compress/zstd.test]
./encoder_options_test.go:135:6: constant 2147483648 overflows int
FAIL	github.com/klauspost/compress/zstd [build failed]

[rathann]

I can confirm that #164 fixes this.