Missed one case of Unmarshal in the previous commit for V0 files (0f4e4969b7)
In V1, unmarshalling was being attempted before the checksum was
verified, so this commit moves those calls to the end of the V1 ReadOne
function.
Change-Id: Ic0b49f0bbc91fb61fb28af6003060994d0af22ed
V1 allows the storagenode to continue reading orders from an
unsent/archived orders file, even if orders in the middle are corrupted.
Change-Id: Iea4117d55c05ceeb77f47d5c973e5ba95da46c66