ICE was broken due to uPNP support, now ICE is back !

[linphone] / mediastreamer2

diff --git a/mediastreamer2 b/mediastreamer2
index 6251dea54272cf048c580e03a80c67d672367f2a..13d3df5a9333ce465214ede7afc9a535a43c9076 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit 6251dea54272cf048c580e03a80c67d672367f2a
+Subproject commit 13d3df5a9333ce465214ede7afc9a535a43c9076