fixup!

Signed-off-by: Alexandros Filios <alexandros.filios@ibm.com>

Author: alexandrosfilios

platform/fabric/core/generic/delivery/delivery.go

@@ -81,7 +81,7 @@ type Delivery struct {
 	tracer              trace.Tracer
 	lastBlockReceived   uint64
 	bufferSize          int
-	stop                chan bool
+	stop                chan struct{}
 }
 
 func New(
@@ -120,7 +120,7 @@ func New(
 		callback:   callback,
 		vault:      vault,
 		bufferSize: max(bufferSize, 1),
-		stop:       make(chan bool),
+		stop:       make(chan struct{}),
 	}
 	return d, nil
 }
@@ -133,7 +133,7 @@ func (d *Delivery) Start(ctx context.Context) {
 }
 
 func (d *Delivery) Stop() {
-	d.stop <- true
+	close(d.stop)
 }
 
 var ctr = atomic.Uint32{}
@@ -143,20 +143,21 @@ func (d *Delivery) Run(ctx context.Context) error {
 	if ctx == nil {
 		ctx = context.Background()
 	}
-	ctx, cancel := context.WithCancel(ctx)
 	ch := make(chan blockResponse, d.bufferSize)
-	go d.readBlocks(ch, cancel)
+	go d.readBlocks(ch)
 	return d.runReceiver(ctx, ch)
 }
 
-func (d *Delivery) readBlocks(ch <-chan blockResponse, cancel func()) {
+func (d *Delivery) readBlocks(ch <-chan blockResponse) {
 	for {
 		select {
 		case b := <-ch:
 			logger.Debugf("Invoking callback for block [%d]", b.block.Header)
-			if stop, err := d.callback(b.ctx, b.block); err != nil {
+			stop, err := d.callback(b.ctx, b.block)
+			if err != nil {
 				logger.Errorf("callback errored for block %d: %v", b.block.Header.Number, err)
-			} else if stop {
+			}
+			if stop {
 				logger.Infof("Stopping delivery at block [%d]", b.block.Header.Number)
 				close(d.stop)
 				return