81d3e71 fix compiler warning in posix winsync code for posix_group_del_memberuid_callback

1 file Authored by rmeggins 10 years ago, Committed by nhosoi 10 years ago,
    fix compiler warning in posix winsync code for posix_group_del_memberuid_callback
    (cherry picked from commit f440e039a5f2a7b2ea0dd087d8e91c554abc1be0)
    (cherry picked from commit 761d9d550ca1025293dc1607760adea38ddc5452)
    (cherry picked from commit 9750ea73014b36349040e166a469ed09236c2549)