peerconnectin_server: missing comma in sprintfn() in r8128

BUG=4244
TEST=Manual Test
R=tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/37079004

Cr-Commit-Position: refs/heads/master@{#8213}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8213 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/talk/examples/peerconnection/server/peer_channel.cc b/talk/examples/peerconnection/server/peer_channel.cc
index 243995b..d92e634 100644
--- a/talk/examples/peerconnection/server/peer_channel.cc
+++ b/talk/examples/peerconnection/server/peer_channel.cc
@@ -114,7 +114,7 @@
 
   // name, 11-digit int, 1-digit bool, newline, null
   char entry[kMaxNameLength + 15];
-  sprintfn(entry, sizeof(entry), "%s%d%d\n",
+  sprintfn(entry, sizeof(entry), "%s,%d,%d\n",
            name_.substr(0, kMaxNameLength).c_str(), id_, connected_);
   return entry;
 }