autohash: force inlining of integer hashing so that the optimizer can see the fast path based on key's size which is known at comptime

otherwise it will always outline the call to hasher.update, resulting in much worse performance
54255ee32eSahnvour committed on 8/4/2019, 10:34:37 AMparent3faf5d3
1 file changedLine totals unavailable