fix the issue 1241.
fix the issue 1241.

Cause:
A wrong argument is passed to OrganizationUser.isAdmin().

Solution:
It is changed to correct one.

naver/yobi,bloodybear/yona,bloodybear/yona,doortts/fork-yobi,Limseunghwan/oss,ChangsungKim/TestRepository01,bloodybear/yona,ahb0327/yobi,yona-projects/yona,ChangsungKim/TestRepository01,violetag/demo,ihoneymon/yobi,ahb0327/yobi,brainagenet/yobi,Limseunghwan/oss,oolso/yobi,brainagenet/yobi,oolso/yobi,naver/yobi,naver/yobi,doortts/fork-yobi,doortts/forked-for-history,violetag/demo,doortts/forked-for-history,doortts/fork-yobi,ahb0327/yobi,Limseunghwan/oss,doortts/fork-yobi,ihoneymon/yobi,brainagenet/yobi,bloodybear/yona,ihoneymon/yobi,yona-projects/yona,yona-projects/yona,yona-projects/yona,doortts/forked-for-history,oolso/yobi