Fix linux test

Signed-off-by: Jiahao XU <[email protected]>

Author: NobodyXu

src/unix.rs

@@ -621,7 +621,11 @@ mod test {
         );
 
         #[cfg(target_os = "linux")]
-        run_named_fifo_try_acquire_tests(&new_client_from_pipe().0);
+        {
+            let client = new_client_from_pipe().0;
+            client.acquire().unwrap();
+            run_named_fifo_try_acquire_tests(&client);
+        }
     }
 
     #[test]