allow consumer tx with confirms

Author: Alexandru Scvortov

test/src/com/rabbitmq/examples/MulticastMain.java

@@ -86,9 +86,9 @@ public static void main(String[] args) {
             int frameMax         = intArg(cmd, 'M', 0);
             int heartbeat        = intArg(cmd, 'b', 0);
 
-            if ((producerTxSize + consumerTxSize > 0) && confirm) {
+            if ((producerTxSize > 0) && confirm) {
                 throw new ParseException("Cannot select both producerTxSize"+
-                                         "/consumerTxSize and confirm");
+                                         " and confirm");
             }
 
             //setup