client: Make initHTTPSClient set client.transport, matching the behavoir of initHTTPClient, and fixing a nil pointer dereference on Close()
client: Make initHTTPSClient set client.transport, matching the behavoir of initHTTPClient, and fixing a nil pointer dereference on Close()

mbrukman/go-etcd,nordligulv/go-etcd,Yhgenomics/go-etcd,coreos/go-etcd