Fix minor error in build script.
Fix minor error in build script.

moonpyk/knockout,Sir0xb/knockout,hitesh97/knockout,gwokudasam/knockout,getshuvo/knockout,pianove/knockout,bago/knockout,hitesh97/knockout,mattbalmer/knuckles,Sir0xb/knockout,stonegithubs/knockout,cgourlay/knockout,youprofit/knockout,gwokudasam/knockout,JesseQin/knockout,skyh/knockout,JesseQin/knockout,brianmhunt/knockout,martijnwetering/knockout,DekeYan/knockout,DekeYan/knockout,brianmhunt/knockout,bago/knockout,martijnwetering/knockout,getshuvo/knockout,skyh/knockout,pianove/knockout,xeronith/knockout,ErikSchierboom/knockout,cgourlay/knockout,xeronith/knockout,mattbalmer/knuckles,moonpyk/knockout,youprofit/knockout,ErikSchierboom/knockout,stonegithubs/knockout