SDL: Add missing include

From 86d36a2dc2a1e68647c4445b984507477cafd53f Mon Sep 17 00:00:00 2001
From: Susko3 <[EMAIL REDACTED]>
Date: Sun, 3 Mar 2024 18:31:00 +0100
Subject: [PATCH] Add missing include

---
 include/SDL3/SDL_properties.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/SDL3/SDL_properties.h b/include/SDL3/SDL_properties.h
index f2fda2810b8d2..33945defae88b 100644
--- a/include/SDL3/SDL_properties.h
+++ b/include/SDL3/SDL_properties.h
@@ -28,6 +28,8 @@
 #ifndef SDL_properties_h_
 #define SDL_properties_h_
 
+#include <SDL3/SDL_stdinc.h>
+
 #include <SDL3/SDL_begin_code.h>
 /* Set up for C function definitions, even when using C++ */
 #ifdef __cplusplus