Fix scan_build warnings in user_priv_test.cc
Fix scan_build warnings in user_priv_test.cc

BUG=webm:1575

Change-Id: I4e38f11162e0de82a730f16b387aeafd2d00e777

webmproject/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,webmproject/libvpx,ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,webmproject/libvpx