Check if source is nil
Check if source is nil

axilleas/gitlabhq,mmkassem/gitlabhq,dplarson/gitlabhq,mmkassem/gitlabhq,t-zuehlsdorff/gitlabhq,iiet/iiet-git,axilleas/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,jirutka/gitlabhq,dplarson/gitlabhq,dreampet/gitlab,axilleas/gitlabhq,iiet/iiet-git,t-zuehlsdorff/gitlabhq,dreampet/gitlab,iiet/iiet-git,mmkassem/gitlabhq,dplarson/gitlabhq,jirutka/gitlabhq,stoplightio/gitlabhq,dreampet/gitlab,stoplightio/gitlabhq,dplarson/gitlabhq,t-zuehlsdorff/gitlabhq,stoplightio/gitlabhq,axilleas/gitlabhq,mmkassem/gitlabhq,jirutka/gitlabhq,jirutka/gitlabhq,dreampet/gitlab,t-zuehlsdorff/gitlabhq