update ms2 with G722

diff --git a/mediastreamer2 b/mediastreamer2
index 2535ee45520d4e6865c3a7675796a609fc50156d..7c63186e67f5ed5ef6dd4bc7ac370a6b8ea041c0 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit 2535ee45520d4e6865c3a7675796a609fc50156d
+Subproject commit 7c63186e67f5ed5ef6dd4bc7ac370a6b8ea041c0