[ox] Fix to build with MinGW

deps/ox/src/ox/std/new.hpp

@@ -12,14 +12,14 @@
 
 #include "types.hpp"
 
-#if !defined(OX_USE_STDLIB)
-#define ox_alloca(size) __builtin_alloca(size)
-#elif defined(_MSC_VER)
+#if defined(_MSC_VER)
 #include <malloc.h>
 #define ox_alloca(size) _alloca(size)
 #elif __has_include(<alloca.h>)
 #include <alloca.h>
 #define ox_alloca(size) alloca(size)
+#else
+#define ox_alloca(size) __builtin_alloca(size)
 #endif