rustup: Fix hashes for MinGW targets
Hi all,
This is the fifth (and hopefully last!) of the preliminary MRs for !1501 (merged) -- it fixes the rustup
hashes for the windows-gnu
targets. The x86_64 target's hash is actually the one specified for i386, and the one in i386 does not match any of the used files. This MR takes care of both.
Let me know what you think. cc @slomo since last update was done by you.