update ms2

[linphone] / mediastreamer2

diff --git a/mediastreamer2 b/mediastreamer2
index 457a44f11e5a947678ae4f53fda0c3ede9a083b1..778f7faa9cc92b4c1f256f8af93ac205d2493b18 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit 457a44f11e5a947678ae4f53fda0c3ede9a083b1
+Subproject commit 778f7faa9cc92b4c1f256f8af93ac205d2493b18