Simplify code.

Author: lukebakken

projects/RabbitMQ.Client/Impl/ChannelBase.cs

@@ -1023,6 +1023,9 @@ await _confirmSemaphore.WaitAsync(cancellationToken)
                     _nextPublishSeqNo++;
                 }
 
+                await EnforceFlowControlAsync(cancellationToken)
+                    .ConfigureAwait(false);
+
                 var cmd = new BasicPublish(exchange, routingKey, mandatory, default);
 
                 using Activity? sendActivity = RabbitMQActivitySource.PublisherHasListeners
@@ -1032,15 +1035,11 @@ await _confirmSemaphore.WaitAsync(cancellationToken)
                 BasicProperties? props = PopulateBasicPropertiesHeaders(basicProperties, sendActivity, publishSequenceNumber);
                 if (props is null)
                 {
-                    await EnforceFlowControlAsync(cancellationToken)
-                        .ConfigureAwait(false);
                     await ModelSendAsync(in cmd, in basicProperties, body, cancellationToken)
                         .ConfigureAwait(false);
                 }
                 else
                 {
-                    await EnforceFlowControlAsync(cancellationToken)
-                        .ConfigureAwait(false);
                     await ModelSendAsync(in cmd, in props, body, cancellationToken)
                         .ConfigureAwait(false);
                 }
@@ -1105,23 +1104,23 @@ await _confirmSemaphore.WaitAsync(cancellationToken)
                     _nextPublishSeqNo++;
                 }
 
+                await EnforceFlowControlAsync(cancellationToken)
+                    .ConfigureAwait(false);
+
                 var cmd = new BasicPublishMemory(exchange.Bytes, routingKey.Bytes, mandatory, default);
+
                 using Activity? sendActivity = RabbitMQActivitySource.PublisherHasListeners
                     ? RabbitMQActivitySource.Send(routingKey.Value, exchange.Value, body.Length)
                     : default;
 
                 BasicProperties? props = PopulateBasicPropertiesHeaders(basicProperties, sendActivity, publishSequenceNumber);
                 if (props is null)
                 {
-                    await EnforceFlowControlAsync(cancellationToken)
-                        .ConfigureAwait(false);
                     await ModelSendAsync(in cmd, in basicProperties, body, cancellationToken)
                         .ConfigureAwait(false);
                 }
                 else
                 {
-                    await EnforceFlowControlAsync(cancellationToken)
-                        .ConfigureAwait(false);
                     await ModelSendAsync(in cmd, in props, body, cancellationToken)
                         .ConfigureAwait(false);
                 }