update ms2 and ortp

[linphone] / mediastreamer2

diff --git a/mediastreamer2 b/mediastreamer2
index b2ddf6ece0aede9c602cfb39d3f43f177c9dbf7e..a77366122ae4366914fb578bd8f28878f7f521be 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit b2ddf6ece0aede9c602cfb39d3f43f177c9dbf7e
+Subproject commit a77366122ae4366914fb578bd8f28878f7f521be