Revert "src/lstate.js: Remove useless luaE_freeCI"
Revert "src/lstate.js: Remove useless luaE_freeCI"

This reverts commit 6646bebd474b95a2d4cbb8558c0d1cb5b5353de0.

giann/fengari,fengari-lua/fengari,daurnimator/fengari,dlbd/fengari