SDL_shadercross: __stdcall call convention is needed on x86 Windows

From 7207bab784e18aebd734751d4de1b4c4d16aa88a Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Sun, 2 Feb 2025 14:20:40 +0100
Subject: [PATCH] __stdcall call convention is needed on x86 Windows

---
 src/SDL_shadercross.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/SDL_shadercross.c b/src/SDL_shadercross.c
index e2bd5ae..676883b 100644
--- a/src/SDL_shadercross.c
+++ b/src/SDL_shadercross.c
@@ -307,7 +307,7 @@ struct IDxcUtils
 /* *INDENT-ON* */ // clang-format on
 
 /* DXCompiler */
-#if defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
+#if defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES) || defined(SDL_PLATFORM_WINDOWS)
 extern HRESULT __stdcall DxcCreateInstance(REFCLSID rclsid, REFIID riid, LPVOID* ppv);
 #else
 extern HRESULT DxcCreateInstance(REFCLSID rclsid, REFIID riid, LPVOID *ppv);