From 0de75b305c603ab0a966c6070c0a38eb71e9f9c5 Mon Sep 17 00:00:00 2001
From: akallabeth <akallabeth@posteo.net>
Date: Sun, 15 Sep 2024 10:19:56 +0200
Subject: [PATCH] [warnings] fix unchecked return

---
 libfreerdp/core/server.c                                | 2 +-
 winpr/libwinpr/interlocked/test/TestInterlockedAccess.c | 2 +-
 winpr/libwinpr/synch/critical.c                         | 2 +-
 winpr/libwinpr/utils/debug.c                            | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/libfreerdp/core/server.c b/libfreerdp/core/server.c
index 72cffdd72..bb96a3b81 100644
--- a/libfreerdp/core/server.c
+++ b/libfreerdp/core/server.c
@@ -1519,7 +1519,7 @@ BOOL WINAPI FreeRDP_WTSVirtualChannelRead(HANDLE hChannelHandle, ULONG TimeOut,
 
 	if (messageCtx->offset >= messageCtx->length)
 	{
-		MessageQueue_Peek(channel->queue, &message, TRUE);
+		(void)MessageQueue_Peek(channel->queue, &message, TRUE);
 		peer_channel_queue_free_message(&message);
 	}
 
diff --git a/winpr/libwinpr/interlocked/test/TestInterlockedAccess.c b/winpr/libwinpr/interlocked/test/TestInterlockedAccess.c
index 0ecd85095..3daeb8b5b 100644
--- a/winpr/libwinpr/interlocked/test/TestInterlockedAccess.c
+++ b/winpr/libwinpr/interlocked/test/TestInterlockedAccess.c
@@ -36,7 +36,7 @@ int TestInterlockedAccess(int argc, char* argv[])
 	/* InterlockedDecrement */
 
 	for (int index = 0; index < 10; index++)
-		InterlockedDecrement(Addend);
+		(void)InterlockedDecrement(Addend);
 
 	if (*Addend != 0)
 	{
diff --git a/winpr/libwinpr/synch/critical.c b/winpr/libwinpr/synch/critical.c
index d3b60b5fc..2c82cb9ed 100644
--- a/winpr/libwinpr/synch/critical.c
+++ b/winpr/libwinpr/synch/critical.c
@@ -244,7 +244,7 @@ VOID LeaveCriticalSection(LPCRITICAL_SECTION lpCriticalSection)
 	}
 	else
 	{
-		InterlockedDecrement(&lpCriticalSection->LockCount);
+		(void)InterlockedDecrement(&lpCriticalSection->LockCount);
 	}
 }
 
diff --git a/winpr/libwinpr/utils/debug.c b/winpr/libwinpr/utils/debug.c
index ba4358e02..e2c2a6690 100644
--- a/winpr/libwinpr/utils/debug.c
+++ b/winpr/libwinpr/utils/debug.c
@@ -192,7 +192,7 @@ void winpr_backtrace_symbols_fd(void* buffer, int fd)
 			return;
 
 		for (size_t i = 0; i < used; i++)
-			_write(fd, lines[i], (unsigned)strnlen(lines[i], UINT32_MAX));
+			(void)_write(fd, lines[i], (unsigned)strnlen(lines[i], UINT32_MAX));
 		free(lines);
 	}
 #else