Lua5.4-beta luaopen_package leaves CLIBS table on stack

[Stefan <ste@...>]

Hello,

I'm not sure if it even matters since lua_call(L, 1, 1) in
luaL_requiref:951 deletes it anyways, but it seems that the
createclibstable function in loadlib.c forgets a value
on the stack due to the change from lua_newtable +
lua_rawsetp to luaL_getsubtable in 5.3.5 -> 5.4 beta.

test.c:

#include <stdio.h>
#include "lua.h"
#include "lualib.h"
#include "lauxlib.h"

int main() {
    lua_State* L = luaL_newstate();
    printf("%d\n", lua_gettop(L));
    luaopen_package(L);
    printf("%d\n", lua_gettop(L));
}


$ gcc -Ilua-5.3.5/src/ test.c lua-5.3.5/src/liblua.a -ldl -lm && a.out
0
1
$ gcc -Ilua-5.4.0-beta/src/ test.c lua-5.4.0-beta/src/liblua.a -ldl -lm
&& a.out
0
2

Stefan