Rust: fix inline flow test

Author: redsun82

rust/ql/test/library-tests/dataflow/sources/test_futures_io.rs

@@ -61,7 +61,7 @@ async fn test_futures_rustls_futures_io() -> io::Result<()> {
         let buffer = pinned.poll_fill_buf(&mut cx);
         if let Poll::Ready(Ok(buf)) = buffer {
             sink(&buffer); // $ hasTaintFlow=url
-            sink(buf); // $ hasTaintFlow=url
+            sink(buf); // $ MISSING: hasTaintFlow=url
         }
 
         // using the `AsyncBufRead` trait (alternative syntax)
@@ -113,7 +113,7 @@ async fn test_futures_rustls_futures_io() -> io::Result<()> {
         sink(&pinned); // $ hasTaintFlow=url
         let mut cx = Context::from_waker(futures::task::noop_waker_ref());
         let buffer = pinned.poll_fill_buf(&mut cx);
-        sink(&buffer); // $ MISSING: hasTaintFlow=url
+        sink(&buffer); // $ hasTaintFlow=url
         if let Poll::Ready(Ok(buf)) = buffer {
             sink(buf); // $ MISSING: hasTaintFlow=url
         }