update ms2

diff --git a/mediastreamer2 b/mediastreamer2
index 2462921605f587a51f82bd439b85fea5bd759b0b..4b8d2b655acc8a329464e7806653dceb04ade445 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit 2462921605f587a51f82bd439b85fea5bd759b0b
+Subproject commit 4b8d2b655acc8a329464e7806653dceb04ade445