SDL: Do not enable SYSWM_X11 for QNX

From c611c6ee6be450528271fff6d92b368952bee3ec Mon Sep 17 00:00:00 2001
From: Elad Lahav <[EMAIL REDACTED]>
Date: Sat, 7 Jan 2023 21:36:38 -0500
Subject: [PATCH] Do not enable SYSWM_X11 for QNX

---
 include/SDL3/SDL_syswm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/SDL3/SDL_syswm.h b/include/SDL3/SDL_syswm.h
index 8c85bf37afec..72bbd16e0857 100644
--- a/include/SDL3/SDL_syswm.h
+++ b/include/SDL3/SDL_syswm.h
@@ -106,7 +106,7 @@
 #endif /* !SDL_DISABLE_SYSWM_WINRT */
 
 #ifndef SDL_DISABLE_SYSWM_X11
-#if defined(__unix__) && !defined(__WIN32__) && !defined(__ANDROID__)
+#if defined(__unix__) && !defined(__WIN32__) && !defined(__ANDROID__) && !defined(__QNX__)
 #define SDL_ENABLE_SYSWM_X11
 #endif
 #endif /* !SDL_DISABLE_SYSWM_X11 */