Stack bugfix.
Stack bugfix.

Wasn't setting _empty correctly on tail stack when pushing.

tdenniston/Halide,aam/Halide,mcanthony/Halide,rodrigob/Halide,mcanthony/Halide,dan-tull/Halide,adasworks/Halide,kgnk/Halide,ronen/Halide,dougkwan/Halide,mcanthony/Halide,delcypher/Halide,fengzhyuan/Halide,ayanazmat/Halide,adasworks/Halide,delcypher/Halide,jiawen/Halide,dan-tull/Halide,adasworks/Halide,ronen/Halide,rodrigob/Halide,ronen/Halide,mikeseven/Halide,damienfir/Halide,jiawen/Halide,psuriana/Halide,rodrigob/Halide,kenkuang1213/Halide,dougkwan/Halide,myrtleTree33/Halide,ayanazmat/Halide,mikeseven/Halide,aam/Halide,myrtleTree33/Halide,fengzhyuan/Halide,gchauras/Halide,jiawen/Halide,tdenniston/Halide,kgnk/Halide,psuriana/Halide,gchauras/Halide,mikeseven/Halide,rodrigob/Halide,mcanthony/Halide,smxlong/Halide,ronen/Halide,smxlong/Halide,dougkwan/Halide,adasworks/Halide,dan-tull/Halide,rodrigob/Halide,lglucin/Halide,rodrigob/Halide,aam/Halide,dougkwan/Halide,smxlong/Halide,dougkwan/Halide,lglucin/Halide,gchauras/Halide,psuriana/Halide,psuriana/Halide,jiawen/Halide,delcypher/Halide,ayanazmat/Halide,mikeseven/Halide,mcanthony/Halide,kgnk/Halide,damienfir/Halide,ronen/Halide,damienfir/Halide,myrtleTree33/Halide,kgnk/Halide,smxlong/Halide,aam/Halide,kenkuang1213/Halide,damienfir/Halide,dougkwan/Halide,kgnk/Halide,fengzhyuan/Halide,adasworks/Halide,fengzhyuan/Halide,rodrigob/Halide,delcypher/Halide,ronen/Halide,myrtleTree33/Halide,gchauras/Halide,mcanthony/Halide,aam/Halide,tdenniston/Halide,kgnk/Halide,ayanazmat/Halide,kenkuang1213/Halide,ayanazmat/Halide,adasworks/Halide,tdenniston/Halide,myrtleTree33/Halide,dougkwan/Halide,dan-tull/Halide,gchauras/Halide,jiawen/Halide,tdenniston/Halide,dan-tull/Halide,mcanthony/Halide,myrtleTree33/Halide,aam/Halide,rodrigob/Halide,delcypher/Halide,adasworks/Halide,ayanazmat/Halide,kgnk/Halide,smxlong/Halide,jiawen/Halide,kgnk/Halide,lglucin/Halide,lglucin/Halide,gchauras/Halide,dan-tull/Halide,mcanthony/Halide,aam/Halide,damienfir/Halide,fengzhyuan/Halide,jiawen/Halide,psuriana/Halide,dan-tull/Halide,ronen/Halide,fengzhyuan/Halide,kenkuang1213/Halide,psuriana/Halide,smxlong/Halide,delcypher/Halide,smxlong/Halide,kenkuang1213/Halide,myrtleTree33/Halide,delcypher/Halide,lglucin/Halide,tdenniston/Halide,ayanazmat/Halide,fengzhyuan/Halide,damienfir/Halide,fengzhyuan/Halide,kenkuang1213/Halide,kenkuang1213/Halide,adasworks/Halide,psuriana/Halide,mikeseven/Halide,smxlong/Halide,damienfir/Halide,ayanazmat/Halide,tdenniston/Halide,dan-tull/Halide,ronen/Halide,dougkwan/Halide,lglucin/Halide,tdenniston/Halide,lglucin/Halide,kenkuang1213/Halide,damienfir/Halide,delcypher/Halide,myrtleTree33/Halide