优化${serverName}识别相关代码

internal/nodes/listener_http.go

@@ -172,15 +172,12 @@ func (this *HTTPListener) ServeHTTPWithAddr(rawWriter http.ResponseWriter, rawRe
 
 	server, serverName := this.findNamedServer(domain, false)
 	if server == nil {
-		if server == nil {
-			// 增加默认的一个服务
+		server = this.emptyServer()
+	} else if !server.CNameAsDomain && server.CNameDomain == domain {
 		server = this.emptyServer()
 	} else {
 		serverName = domain
 	}
-	} else if !server.CNameAsDomain && server.CNameDomain == domain {
-		server = this.emptyServer()
-	}
 
 	// 绑定连接
 	var clientConn ClientConnInterface