make mediastreamer2 to the correct branch/version

diff --git a/mediastreamer2 b/mediastreamer2
index bc6c0ed4c16db22c9d7cecec9d0c309c722e08ea..d45f8e79e37c1754e8f09c1f299cef1a57db66f6 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit bc6c0ed4c16db22c9d7cecec9d0c309c722e08ea
+Subproject commit d45f8e79e37c1754e8f09c1f299cef1a57db66f6