When there's no `nvm run` output, don't echo an empty line.
When there's no `nvm run` output, don't echo an empty line.

vinaykaradia/clone-nvm,LeeLovCY/nvm,lukechilds/nvm,lukechilds/nvm,vinaykaradia/clone-nvm,DigitallySeamless/nvm,diegofcb10/nvm,greyhwndz/nvm,mirydz/nvm,WY08271/nvm,bbuck/nvm,PeterDaveHelloKitchen/nvm,jaawerth/nvm,tlevine/nvm,gtdeng/nvm,joneit/nvm,JasonChrYoung/nvm,woss/nvm,PeterDaveHello/nvm,JasonChrYoung/nvm,christophercaburog/nvm,woss/nvm,cjac/nvm,jhliberty/nvm,slariviere/nvm,tianzhihen/nvm,ljharb/nvm,jaawerth/nvm,youleiy/nvm,nontage24/nvm,LeeLovCY/nvm,DigitallySeamless/nvm,youleiy/nvm,joneit/nvm,williamboman/nvm,cjac/nvm,chinazhaghai/nvm,edwmurph/nvm,misterdjules/nvm,devedbox/nvm,diegofcb10/nvm,WY08271/nvm,icyflame/nvm,parasaro92/nvm,elrasguno/nvm,fnogatz/swivm,Ingelheim/nvm,jbergstroem/nvm,jhliberty/nvm,creationix/nvm,mmorejon/nvm,domenicosolazzo/nvm,gtdeng/nvm,cirosantilli/nvm,psychoss/nvm,icyflame/nvm,Theodeus/nvm,creationix/nvm,kumaria/nvm,Kuzirashi/nvm,reybango/nvm,Richardphp/nvm,wahyutaufik/nvm,evocateur/nvm,thomasf/nvm,kmctown/nvm,SampleLiao/nvm,modulexcite/nvm,bbuck/nvm,hanhailong/nvm,egilkh/nvm,greyhwndz/nvm,JanChw/nvm,michael-ni/nvm,cnpm/nvm,scq000/nvm,PeterDaveHelloKitchen/nvm,mmorejon/nvm,parasaro92/nvm,Richardphp/nvm,PeterDaveHello/nvm,chinazhaghai/nvm,evocateur/nvm,wahyutaufik/nvm,dfackler/nvm,williamboman/nvm,thomasf/nvm,modulexcite/nvm,Ingelheim/nvm,slariviere/nvm,misterdjules/nvm,reybango/nvm,owen-it/nvm,tlevine/nvm,CristianCantoro/nvm,CristianCantoro/nvm,wskplho/nvm,SampleLiao/nvm,Theodeus/nvm,Salahudeen/nvm,wskplho/nvm,mirydz/nvm,hkdobrev/nvm,owen-it/nvm,pmq20/nvm,cirosantilli/nvm,devedbox/nvm,tianzhihen/nvm,bevacqua/nvm,pmq20/nvm,IonicaBizauKitchen/nvm,kmctown/nvm,hanhailong/nvm,scq000/nvm,JanChw/nvm,ljharb/nvm,Salahudeen/nvm,bevacqua/nvm,christophercaburog/nvm,hkdobrev/nvm,psychoss/nvm,michael-ni/nvm,jbergstroem/nvm,IonicaBizauKitchen/nvm,Kuzirashi/nvm,kumaria/nvm,domenicosolazzo/nvm,egilkh/nvm,cnpm/nvm,dfackler/nvm,edwmurph/nvm,elrasguno/nvm,nontage24/nvm