initialize network variables

there were a number of variables copied over from the legacy Network
class that were not properly initialized.

src/amqp_client.cpp

@@ -19,6 +19,9 @@ ClientPrivate::ClientPrivate(Client *q)
     : port(AMQP_PORT),
       host(QString::fromLatin1(AMQP_HOST)),
       virtualHost(QString::fromLatin1(AMQP_VHOST)),
+      autoReconnect(false),
+      timeout(-1),
+      connecting(false),
       socket(0),
       closed(false),
       connected(false),