add comment to fix race

License: MIT
Signed-off-by: Brian Tiger Chow <brian@perfmode.com>

exchange/bitswap/strategy/ledgermanager.go

@@ -26,6 +26,8 @@ type LedgerManager struct {
 	lock      sync.RWMutex
 	ledgerMap ledgerMap
 	bs        bstore.Blockstore
+	// FIXME tasklist isn't threadsafe nor is it protected by a mutex. consider
+	// a way to avoid sharing the tasklist between the worker and the receiver
 	tasklist   *taskList
 	outbox     chan Envelope
 	workSignal chan struct{}