fix typo: read_nonblock call on SSLSocket

sorry, typo

Author: dotconfig404

lib/net/http.rb

@@ -2464,7 +2464,7 @@ def begin_transport(req)
           connect
         end
         while @socket.io.to_io.wait_readable(0)
-          if @socket.io.to_io.read_nonblock(1, exception: false) == nil
+          if @socket.io.read_nonblock(1, exception: false) == nil
             debug "Conn close because of EOF"
             @socket.close
             connect