Unaligned stacks on i686-w64-mingw32, may lead to crashes (#7607)

Co-authored-by: Ozkan Sezer <sezeroz@gmail.com>

src/main/windows/SDL_windows_main.c

@@ -103,7 +103,7 @@ int console_wmain(int argc, wchar_t *wargv[], wchar_t *wenvp)
 #endif
 
 /* This is where execution begins [windowed apps] */
-int WINAPI
+int WINAPI MINGW32_FORCEALIGN
 WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw) /* NOLINT(readability-inconsistent-declaration-parameter-name) */
 {
     return main_getcmdline();