discovery: utilize exactly 9 bytes for serialized waitingProofKey
discovery: utilize exactly 9 bytes for serialized waitingProofKey

ddustin/lnd,AndrewSamokhvalov/lnd,LightningNetwork/lnd,aakselrod/lnd,LightningNetwork/lnd,ddustin/lnd,aakselrod/lnd,AndrewSamokhvalov/lnd