Update oRTP and mediastreamer2 submodules.

[linphone] / oRTP

diff --git a/oRTP b/oRTP
index b055a505042c4420e104ce81a09790c5373f62bb..16db796543aa4cf0e44bb022f5556d7536e60c34 160000 (submodule)
--- a/oRTP
+++ b/oRTP
@@ -1 +1 @@
-Subproject commit b055a505042c4420e104ce81a09790c5373f62bb
+Subproject commit 16db796543aa4cf0e44bb022f5556d7536e60c34