Fix merge mistake

8f84a293b7afbdc7d19eb213148e96e1df9f8973
commit 8f84a293b7afbdc7d19eb213148e96e1df9f8973
@@ -1058,6 +1058,7 @@ def _create(cls, sock, server_side=False, do_handshake_on_connect=True,
                     # EAGAIN occurs on Cygwin.
                     if e.errno not in (errno.ENOTCONN, errno.EINVAL,
                                        errno.EAGAIN):
+                        raise
                     notconn_pre_handshake_data = b''
                 self.setblocking(blocking)
                 if notconn_pre_handshake_data: