Update talk to 58157731.

R=wu@webrtc.org

TBR=wu@webrc.org

Review URL: https://webrtc-codereview.appspot.com/5339005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5282 4adac7df-926f-26a2-2b94-8c16560cd09d

talk/base/asyncpacketsocket.h

@@ -38,7 +38,7 @@ namespace talk_base {
 // This structure will have the information about when packet is actually
 // received by socket.
 struct PacketTime {
-  PacketTime() : timestamp(0), not_before(0) {}
+  PacketTime() : timestamp(-1), not_before(-1) {}
   PacketTime(int64 timestamp, int64 not_before)
       : timestamp(timestamp), not_before(not_before) {
   }