Fixed Block#toString() with no node
Fixed Block#toString() with no node

PeterWangPo/stylus,behzad88/stylus,Panya/stylus,a-x-/stylus,cemoulto/stylus,meteor/stylus,jonpacker/stylus,ThiagoGarciaAlves/stylus,johnnycopperstone/stylus,rstacruz/stylus,Delapouite/stylus,jameswomack/stylus,silvaemota/stylus,SimenB/stylus,peterkinalex/stylus-1,HossainKhademian/Stylus,baotingfang/stylus,Ricardh522/stylus,tyv/stylus,angryrobot/stylus,jangarcia/stylus,trixter5/stylus,yetone/stylus,Zagorakiss/stylus,isaacs/stylus,darwin/stylus,modulexcite/stylus,stylus/stylus,galenvagen/stylus