cmd/term: fix SIGINT handling
cmd/term: fix SIGINT handling

After closing the channel, we may run in troubles :-)

mderaldo/tsuru,ArxdSilva/tsuru,kgrvamsi/tsuru,gwmoura/tsuru,4eek/tsuru,cezarsa/tsuru,ggarnier/tsuru,mderaldo/tsuru,gciotta/tsuru,hcxiong/tsuru,RichardKnop/tsuru,ArxdSilva/tsuru,RichardKnop/tsuru,ggarnier/tsuru,ArxdSilva/tsuru,guilhermebr/tsuru,hugoantunes/tsuru,ggarnier/tsuru,tuxmonteiro/tsuru,4eek/tsuru,gwmoura/tsuru,RichardKnop/tsuru,Endika/tsuru,cezarsa/tsuru,firebitsbr/tsuru,gciotta/tsuru,kgrvamsi/tsuru,gciotta/tsuru,cezarsa/tsuru,cgvarela/tsuru,hcxiong/tsuru,tsuru/tsuru,Endika/tsuru,Endika/tsuru,guilhermebr/tsuru,tuxmonteiro/tsuru,jblancett/tsuru,hugoantunes/tsuru,tsuru/tsuru,cgvarela/tsuru,4eek/tsuru,tsuru/tsuru,guilhermebr/tsuru,gwmoura/tsuru,tuxmonteiro/tsuru,firebitsbr/tsuru,jblancett/tsuru,cgvarela/tsuru,firebitsbr/tsuru,guilhermebr/tsuru,kgrvamsi/tsuru,hcxiong/tsuru,jblancett/tsuru,ArxdSilva/tsuru,cezarsa/tsuru,ggarnier/tsuru,tsuru/tsuru,mderaldo/tsuru