flutter version allow hide cm

Signed-off-by: 21pages <pages21@163.com>

src/ui_session_interface.rs

@@ -200,6 +200,7 @@ impl<T: InvokeUiSession> Session<T> {
             h265 = h265 && encoding_265;
             return (h264, h265);
         }
+        #[allow(dead_code)]
         (false, false)
     }