tcp_nodelay on ClientBuilder does not actually set TCP_NODELAY

[abls]

When trying to set nodelay on a ClientBuilder (e.g. reqwest::Client::builder().tcp_nodelay(true)), the resulting clients that are built do not have TCP_NODELAY set on the sockets they use. This happens when an http connection is made and either the default features are enabled or the rustls-tls feature is enabled. Also note that tcp_nodelay(true) works as intended when default features are disabled and rustls-tls is not enabled.

Here is where ClientBuilder creates the HttpConnector it eventually passes to one of the Connector::new functions towards the end of that scope without ever configuring the HttpConnector beyond setting a timeout. Only one of those Connector::new functions sets TCP_NODELAY here, and that only get called when the __tls feature is disabled. An easy fix would be to simply add that line to the other Connector:new functions such as under this line.