net: fix byte buffers

vlib/net/http/backend_nix.c.v

@@ -101,7 +101,7 @@ fn (req &Request) ssl_do(port int, method Method, host_name string, path string)
 	// println(req_headers)
 	C.BIO_puts(web, &char(req_headers.str))
 	mut content := strings.new_builder(100)
-	mut buff := [bufsize]byte{}
+	mut buff := [bufsize]u8{}
 	bp := unsafe { &buff[0] }
 	mut readcounter := 0
 	for {

vlib/net/tcp_read_line.v

@@ -57,7 +57,7 @@ pub fn (mut con TcpConn) read_line_max(max_line_len int) string {
 	if !con.is_blocking {
 		con.set_blocking(true) or {}
 	}
-	mut buf := [net.max_read]byte{} // where C.recv will store the network data
+	mut buf := [net.max_read]u8{} // where C.recv will store the network data
 	mut res := strings.new_builder(net.max_read) // The final result, including the ending \n.
 	defer {
 		unsafe { res.free() }