Fix #2863 (#2865)

* fix #2863

* fix #2863

packages/l/luajit/port/xmake.lua

@@ -206,7 +206,8 @@ target("luajit")
               "src/lib_package.c",
               "src/lib_debug.c",
               "src/lib_jit.c",
-              "src/lib_ffi.c", {rules = {"buildvm", override = true}})
+              "src/lib_ffi.c",
+              "src/lib_buffer.c", {rules = {"buildvm", override = true}})
 
 target("luajit_bin")
     set_kind("binary")