Fixed unreachable option in re2.

[hghwng]

data[0] << 16 + data[1] always results in 0b0000_0000_XXXX_XXXX, where XXXX_XXXX is the bits of data[1]. Therefore, f & 256 to f & 1024 are meaningless.

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[hghwng]

@googlebot I signed it!

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CLAs look good, thanks!

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[hghwng]

Any update?

[kcc]

Fun, good catch!
I am a bit reluctant to make this change because it's a benchmark, not a rel fuzz target that aims at finding the most of bugs. Changing it now means that we can't compare results before and after this change.