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/xmllite/xmlbuilder.cc b/talk/xmllite/xmlbuilder.cc
index 486b6d5..f71e542 100644
--- a/talk/xmllite/xmlbuilder.cc
+++ b/talk/xmllite/xmlbuilder.cc
@@ -37,7 +37,7 @@
 
 XmlBuilder::XmlBuilder() :
   pelCurrent_(NULL),
-  pelRoot_(NULL),
+  pelRoot_(),
   pvParents_(new std::vector<XmlElement *>()) {
 }