sse: Return from read() impl immediately after cv return

This is going to make it easier to work with a condvar wait which
disposes of the mutex guard.

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

diff --git a/daemon/sse.rs b/daemon/sse.rs
index 4e1dc387f047ab653e27eec19471c59feb841e9e..31dceaf9fb27959a88a85a7f61b62c910c8016f0 100644 (file)
--- a/daemon/sse.rs
+++ b/daemon/sse.rs
@@ -210,6 +210,8 @@ impl Read for UpdateReader {
                    data: online {} {} G{}\n\n",
              self.player, self.client, ig.gs.gen)?;
       self.keepalives += Wrapping(1);
+      self.need_flush = true;
+      return Ok(buf.generated());
 /*
       write!(buf,": keepalive\n\n")?; */
     }