Incorrect "CWallet::GetSaplingNoteWitnesses: Invalid witness root!" exception

[leto]

this is from CWallet::GetSaplingNoteWitnesses in src/wallet/wallet.cpp .

It seems that removing some Sprout code has messed up the == operator for SaplingNotes, so we currently just print to STDERR instead of throwing a logic_error. Upstream ZEC will coredump at run-time with an assert.

This should be fixed correctly so this line of code works as intended:

1732                if(*rt == witnesses[i]->root()) {