From 596d7286d2b5adc855cc00f12fd1e70f2c85e409 Mon Sep 17 00:00:00 2001
From: dragonmux <git@dragonmux.network>
Date: Tue, 31 Oct 2023 20:15:16 +0000
Subject: [PATCH] windows/serialInterface: Improved the error diagnostics
 slightly by preventing the omission of a spurious diagnostic

---
 src/windows/serialInterface.cxx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/windows/serialInterface.cxx b/src/windows/serialInterface.cxx
index 3bc36df..c9def6f 100644
--- a/src/windows/serialInterface.cxx
+++ b/src/windows/serialInterface.cxx
@@ -218,6 +218,9 @@ void serialInterface_t::handleDeviceError(const std::string_view operation) noex
 {
 	// Get the last error that occured
 	const auto error{GetLastError()};
+	// If there is no error and no device (we failed to look up the device node), return early
+	if (error == ERROR_SUCCESS && device == INVALID_HANDLE_VALUE)
+		return;
 	char *message{nullptr};
 	// Ask Windows to please tell us what the error value we have means, and allocate + store it in `message`
 	FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, nullptr,