update ms2

diff --git a/mediastreamer2 b/mediastreamer2
index 4ee916b3fcae0aba38a0d595079298242c9ac2cd..f7bf945917f71afc050edb0968e3262201572a34 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit 4ee916b3fcae0aba38a0d595079298242c9ac2cd
+Subproject commit f7bf945917f71afc050edb0968e3262201572a34