Memory over usage by the Lua infrastructure: Lua scripts bytecode cache is not freed during garbage collection

[asafpor]

On each creation of new Lua script, a new closure is allocated and the allocated object is linked to the garbage collection.
{code}
Closure *luaF_newLclosure (lua_State *L, int nelems, Table *e) {
Closure *c = cast(Closure *, luaM_malloc(L, sizeLclosure(nelems)));
luaC_link(L, obj2gco(c), LUA_TFUNCTION);
{code}

Creation of many scripts cause inflation of the memory used by the Lua infrastructure of Redis.

From reviewing the code seems like the LUA_TFUNCTION should be freed by the garbage collection, but, for some reason the closures are stored forever.
Is it by design, how can I free the bytecode cache without reset the Lua engine?