paper key restore race condition

[tofutim]

Under certain conditions, in particular, in a paper key restore, the merkleblock can arrive before the transaction. In this case, the transaction will not receive blockheight and timestamp in BRWalletUpdateTransaction as called by _peerRelayedBlock. When BRWalletRegisterTransaction is later called, BRWalletUpdateTransaction is never called again.

I'm trying to figure out if there is a way to look up stored merkleblocks for the transaction, or cache the UpdateTransaction info... maybe a map of txhash to block? or a BRSet of blocks to check for txs? I need a hash table!