fix a surface leak introduced by a failed merge (DO NOT MERGE)

    if (l != NULL) {

        Mutex::Autolock _l(mStateLock);

        err = removeLayer_l(l);

        if (err == NAME_NOT_FOUND) {

            // The surface wasn't in the current list, which means it was

            // removed already, which means it is in the purgatory,

            // and need to be removed from there.

            ssize_t idx = mLayerPurgatory.remove(l);

            LOGE_IF(idx < 0,

                    "layer=%p is not in the purgatory list", l.get());

        }

        LOGE_IF(err<0 && err != NAME_NOT_FOUND,

                "error removing layer=%p (%s)", l.get(), strerror(-err));

    }