Missed regression

[Fraser999]

When running crater against #36384, the results exposed a regression in our XorName crate.

This crate has been absorbed (more or less verbatim) into our Routing crate which is published on crates.io, and as such I'd have expected a similar regression to have been exposed at https://github.com/maidsafe/routing/blob/master/src/xor_name.rs#L58-L59.

[bluss]

@Fraser999 The new code will not stop compiling and will not regress because of a minute difference:

The orignal in XorName uses [u8; 64], and the new code uses [u8; 32]. Arrays of size 0-32 inclusive have the needed explicit trait implementations, including Eq.

[Fraser999]

Ah - of course! Sorry for the bogus report :(