Make a int64 constant use ULL suffix so it wont get truncated.
BUG=3690
TESTED=try bots
R=andrew@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/15139004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6878 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/rtp_rtcp/source/rtcp_packet.cc b/webrtc/modules/rtp_rtcp/source/rtcp_packet.cc
index 68da3ae..4228cfb 100644
--- a/webrtc/modules/rtp_rtcp/source/rtcp_packet.cc
+++ b/webrtc/modules/rtp_rtcp/source/rtcp_packet.cc
@@ -938,7 +938,7 @@
 
 void Rpsi::WithPictureId(uint64_t picture_id) {
   const uint32_t kPidBits = 7;
-  const uint64_t k7MsbZeroMask = 0x1ffffffffffffff;
+  const uint64_t k7MsbZeroMask = 0x1ffffffffffffffULL;
   uint8_t required_bytes = 0;
   uint64_t shifted_pid = picture_id;
   do {