gossip: Drop fail guard in mark_alive and apply_state_locally
gossip: Drop fail guard in mark_alive and apply_state_locally

tempbottle/scylla,eklitzke/scylla,acbellini/scylla,asias/scylla,wildinto/scylla,stamhe/scylla,glommer/scylla,raphaelsc/scylla,respu/scylla,capturePointer/scylla,dwdm/scylla,guiquanz/scylla,avikivity/scylla,duarten/scylla,kangkot/scylla,phonkee/scylla,bowlofstew/scylla,gwicke/scylla,kangkot/scylla,acbellini/scylla,bowlofstew/scylla,aruanruan/scylla,dwdm/scylla,justintung/scylla,shaunstanislaus/scylla,rluta/scylla,linearregression/scylla,duarten/scylla,aruanruan/scylla,respu/scylla,victorbriz/scylla,victorbriz/scylla,rluta/scylla,kangkot/scylla,raphaelsc/scylla,acbellini/scylla,wildinto/scylla,rentongzhang/scylla,glommer/scylla,shaunstanislaus/scylla,stamhe/scylla,rluta/scylla,capturePointer/scylla,aruanruan/scylla,scylladb/scylla,respu/scylla,scylladb/scylla,guiquanz/scylla,senseb/scylla,rentongzhang/scylla,senseb/scylla,rentongzhang/scylla,shaunstanislaus/scylla,scylladb/scylla,scylladb/scylla,phonkee/scylla,kjniemi/scylla,bowlofstew/scylla,kjniemi/scylla,duarten/scylla,glommer/scylla,justintung/scylla,capturePointer/scylla,eklitzke/scylla,justintung/scylla,wildinto/scylla,gwicke/scylla,linearregression/scylla,asias/scylla,avikivity/scylla,tempbottle/scylla,raphaelsc/scylla,eklitzke/scylla,avikivity/scylla,guiquanz/scylla,gwicke/scylla,asias/scylla,dwdm/scylla,tempbottle/scylla,kjniemi/scylla,stamhe/scylla,victorbriz/scylla,senseb/scylla,phonkee/scylla,linearregression/scylla