memcheck: suppressions didn't map over directly when moving base from talk to webrtc (part of the suppression that is not related to the signature differed). Fixed suppressions accordingly.

BUG=N/A
R=kjellander@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/29499004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7191 4adac7df-926f-26a2-2b94-8c16560cd09d