Fix session cleaning (#2176)
Fix session cleaning (#2176)

Regression introduced by #2028
chabou/hyper,derrickpelletier/hyper,whitelynx/hyperterm,KunalKene1797/hyper,zeit/hyper,chabou/hyper,zeit/hyper,whitelynx/hyperterm,wilsontayar/hyper,wilsontayar/hyper,KunalKene1797/hyper,zeit/hyper,ppot/hyper,reslaurentii/hyper,zeit/hyper,zeit/hyperterm,chabou/hyper,ppot/hyper,zeit/hyperterm,reslaurentii/hyper,ppot/hyper,derrickpelletier/hyper