more idiomatic error handling

HubConnection.go

@@ -185,12 +185,13 @@ func (this *HubConnection) processProtocolMessage(message string) {
 	case "$MyINFO":
 		u := UserInfo{}
 		err := u.fromMyINFO(commandParts[1])
-		if err == nil {
-			this.userJoined_Full(&u)
-		} else {
+		if err != nil {
 			this.processEvent(HubEvent{EventType: EVENT_DEBUG_MESSAGE, Message: err.Error()})
+			return
 		}
 
+		this.userJoined_Full(&u)
+
 	case "$NickList":
 		nicklist := strings.Split(commandParts[1], "$$")
 		for _, nick := range nicklist {