more TODO comments

Author: graingert

src/trio/_core/_io_kqueue.py

@@ -81,7 +81,7 @@ def get_events(self, timeout: float) -> EventResult:
             events += batch
             if len(batch) < max_events:
                 break
-            else:
+            else:  # TODO: test this line
                 timeout = 0
                 # and loop back to the start
         return events

src/trio/_dtls.py

@@ -1039,7 +1039,7 @@ def read_volley() -> list[_AnyHandshakeMessage]:
                             if (
                                 isinstance(maybe_volley[0], PseudoHandshakeMessage)
                                 and maybe_volley[0].content_type == ContentType.alert
-                            ):
+                            ):  # TODO: test this branch
                                 # we're sending an alert (e.g. due to a corrupted
                                 # packet). We want to send it once, but don't save it to
                                 # retransmit -- keep the last volley as the current