client: better logging of ipif failures

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/src/bin/client.rs b/src/bin/client.rs
index 095cd556a58ad2bb4d21c71d427298455fdda167..b3d7de32c6511b4e09b4dbe21fa9fc3185c153b8 100644 (file)
--- a/src/bin/client.rs
+++ b/src/bin/client.rs
@@ -241,9 +241,9 @@ async fn run_client<C:HCC>(
         data = tx_stream.next_segment(),
         if tx_queue.is_empty() =>
         {
-          let data =
-            data.context("read from ipif")?
-            .ok_or_else(|| io::Error::from(io::ErrorKind::UnexpectedEof))?;
+          let data = (||{
+            data?.ok_or_else(|| io::Error::from(io::ErrorKind::UnexpectedEof))
+          })().context("read from ipif")?;
           //eprintln!("data={:?}", DumpHex(&data));
 
           match check1(Slip2Mime, ic.mtu, &data, |header| {