unreachable code

[CoderZhi]

iotex-core/blockchain/filedao/filedao.go

Line 108 in ae66d8b

panic(fmt.Errorf("corrupted file version: %s", header.Version))

What version of iotex-core image (or code branch) are you using?

What operating system and processor architecture are you using?

What did you do? If possible, provide a recipe for reproducing the error.

What did you expect to see?

What did you see instead?

[dustinxie]

this is protection code to panic for an unexpected data/type, we have similar panic in other places in the codebase to handle similar situation. let me know if there's sth I may have missed.