pubsub: change MaxExtensionPeriod default
@@ -419,7 +419,7 @@ var minAckDeadline = 10 * time.Second
// DefaultReceiveSettings holds the default values for ReceiveSettings.
var DefaultReceiveSettings = ReceiveSettings{
MaxExtension: 60 * time.Minute,
- MaxExtensionPeriod: -1,
+ MaxExtensionPeriod: 0,
MaxOutstandingMessages: 1000,
MaxOutstandingBytes: 1e9, // 1G
NumGoroutines: 1,
