Fix memory leak
Fix memory leak

apiaryio/drafter,neonichu/drafter,apiaryio/drafter,neonichu/drafter,hendrikmaus/drafter,neonichu/drafter,apiaryio/drafter,apiaryio/drafter,hendrikmaus/drafter,apiaryio/drafter,hendrikmaus/drafter,hendrikmaus/drafter,neonichu/drafter