Update libjingle to 55618622.
Update libyuv to r826.

TEST=try bots
R=niklas.enbom@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2889004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5038 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/talk/examples/call/callclient.cc b/talk/examples/call/callclient.cc
index 66c4b6f..afbdd29 100644
--- a/talk/examples/call/callclient.cc
+++ b/talk/examples/call/callclient.cc
@@ -396,7 +396,7 @@
       transport_protocol_(cricket::ICEPROTO_HYBRID),
       sdes_policy_(cricket::SEC_DISABLED),
       dtls_policy_(cricket::SEC_DISABLED),
-      ssl_identity_(NULL),
+      ssl_identity_(),
       show_roster_messages_(false) {
   xmpp_client_->SignalStateChange.connect(this, &CallClient::OnStateChange);
   my_status_.set_caps_node(caps_node);