luaK_patchtohere
luaK_patchtohere(fs, list);
luaK_patchtohere(fs, fj);
luaK_patchtohere(fs, e->t);
luaK_patchtohere(fs, e->f);
LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
luaK_patchtohere(fs, condexit); /* false conditions finish the loop */
luaK_patchtohere(fs, prep);
luaK_patchtohere(fs, jf);
luaK_patchtohere(fs, escapelist); /* patch escape list to 'if' end */
luaK_patchtohere(fs, j);