Dispatch transaction from job queue, not I/O service. Mark a FIXME where we don't do this.

src/cpp/ripple/NetworkOPs.cpp

@@ -210,6 +210,7 @@ void NetworkOPs::submitTransaction(Job&, SerializedTransaction::pointer iTrans,
 		}
 	}
 
+	// FIXME: Should submit to job queue
 	theApp->getIOService().post(boost::bind(&NetworkOPs::processTransaction, this,
 		boost::make_shared<Transaction>(trans, false), callback));
 }

src/cpp/ripple/Peer.cpp

@@ -830,7 +830,7 @@ static void checkTransaction(Job&, int flags, SerializedTransaction::pointer stx
 		else
 			tx = boost::make_shared<Transaction>(stx, false);
 
-		theApp->getIOService().post(boost::bind(&NetworkOPs::processTransaction, &theApp->getOPs(), tx));
+		theApp->getOPs().processTransaction(tx);
 
 #ifndef TRUST_NETWORK
 	}