Suppressing TSan warnings for system_wrappers_unittests

This CL makes system_wrappers_unittests pass on Lucid (it passed on Precise
without them for me).

BUG=300
TEST=Try job on linux_tsan
TBR=henrike

Review URL: https://webrtc-codereview.appspot.com/976007

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3263 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed