Getting rid of a silly `else` block

sylvilagus/scala/src/main/scala/com/meatballhat/sylvilagus/ch02/HelloWorldProducer.scala

@@ -5,20 +5,20 @@ import com.rabbitmq.client._
 object HelloWorldProducer extends App {
     if (args.length < 1) {
         println("You must provide a message argument")
-    } else {
-        var messageBody = args(0)
+        exit
+    }
+    var messageBody = args(0)
 
-        var factory = new ConnectionFactory()
-        factory.setUri("amqp://guest:guest@localhost:5672")
-        var connection = factory.newConnection()
-        var channel = connection.createChannel()
+    var factory = new ConnectionFactory()
+    factory.setUri("amqp://guest:guest@localhost:5672")
+    var connection = factory.newConnection()
+    var channel = connection.createChannel()
 
-        channel.exchangeDeclare("hello-exchange", "direct", true)
-        channel.queueDeclare("hello-queue", false, false, false, null)
+    channel.exchangeDeclare("hello-exchange", "direct", true)
+    channel.queueDeclare("hello-queue", false, false, false, null)
 
-        printf("Publishing '%s'\n", messageBody)
-        channel.basicPublish("hello-exchange", "hola", null, messageBody.getBytes())
+    printf("Publishing '%s'\n", messageBody)
+    channel.basicPublish("hello-exchange", "hola", null, messageBody.getBytes())
 
-        connection.close()
-    }
+    connection.close()
 }