From 8807347ec62148040719e7426d9c68c18ab3d80e Mon Sep 17 00:00:00 2001
From: folkert van heusden <mail@vanheusden.com>
Date: Fri, 10 May 2024 16:56:07 +0200
Subject: [PATCH] ESP32 compile fix

---
 dc11.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dc11.cpp b/dc11.cpp
index 0524fd7..f2e5047 100644
--- a/dc11.cpp
+++ b/dc11.cpp
@@ -567,8 +567,9 @@ void dc11::write_word(const uint16_t addr, const uint16_t v)
 			DOLOG(info, false, "DC11 line %d disconnected\n", line_nr + 1);
 
 			registers[line_nr * 4 + 0] |= 0140000;  // "ERROR", CARRIER TRANSITION
-
+#if IS_POSIX
 			assert(fd != serial_fd);
+#endif
 			close(fd);
 			pfds[dc11_n_lines + line_nr].fd = INVALID_SOCKET;
 		}