multi: update to fn v2

channeldb/migration32/mission_control_store.go

@@ -8,7 +8,7 @@ import (
 
 	"github.com/btcsuite/btcd/wire"
 	lnwire "github.com/lightningnetwork/lnd/channeldb/migration/lnwire21"
-	"github.com/lightningnetwork/lnd/fn"
+	"github.com/lightningnetwork/lnd/fn/v2"
 	"github.com/lightningnetwork/lnd/tlv"
 )
 
@@ -371,7 +371,7 @@ func extractMCRoute(r *Route) *mcRoute {
 // extractMCHops extracts the Hop fields that MC actually uses from a slice of
 // Hops.
 func extractMCHops(hops []*Hop) mcHops {
-	return fn.Map(extractMCHop, hops)
+	return fn.Map(hops, extractMCHop)
 }
 
 // extractMCHop extracts the Hop fields that MC actually uses from a Hop.