SDL_mslibc.c: revert PR/10303 changes

(cherry picked from commit 2cb2897e50634abd7f807c9f2901589d8ea7cc5f)

src/stdlib/SDL_mslibc.c

@@ -120,12 +120,12 @@ localexit:
     /* *INDENT-ON* */
 }
 
-void _ftol2_sse(void)
+void _ftol2_sse()
 {
     _ftol();
 }
 
-void _ftol2(void)
+void _ftol2()
 {
     _ftol();
 }