io: Rename `ReadBuf` methods (#2945)

This changes `ReadBuf::add_filled` to `ReadBuf::advance` and
`ReadBuf::append` to `ReadBuf::put_slice`. This is just a
mechanical change.

Closes #2769

1 files changed, 1 insertions, 1 deletions

diff --git a/tokio/tests/io_read.rs b/tokio/tests/io_read.rs
index 0a717cf5..29d7d6d7 100644
--- a/tokio/tests/io_read.rs
+++ b/tokio/tests/io_read.rs
@@ -24,7 +24,7 @@ async fn read() {
             assert_eq!(0, self.poll_cnt);
             self.poll_cnt += 1;
 
-            buf.append(b"hello world");
+            buf.put_slice(b"hello world");
             Poll::Ready(Ok(()))
         }
     }