Fix some leaks/hangs on close: unstarted StreamInterface streams & TCP reader unblock

meshtastic/tests/test_stream_interface.py

@@ -33,6 +33,17 @@ def test_StreamInterface_close_safe_when_thread_never_started():
     iface.close()
 
 
+@pytest.mark.unit
+@pytest.mark.usefixtures("reset_mt_config")
+def test_StreamInterface_close_when_thread_never_started_closes_stream():
+    """If no reader thread was started, close() should still close the stream."""
+    iface = StreamInterface(noProto=True, connectNow=False)
+    stream = MagicMock()
+    iface.stream = stream
+    iface.close()
+    stream.close.assert_called_once()
+
+
 @pytest.mark.unit
 @pytest.mark.usefixtures("reset_mt_config")
 def test_StreamInterface_init_cleans_up_when_connect_raises():