Really add strtok in oRTP

[linphone] / mediastreamer2

diff --git a/mediastreamer2 b/mediastreamer2
index bc1cb1d1f2b996c84828ba7d81ae43b95bcceacb..b40cd2308ed594e2f4f311654a4291b22c72b5ac 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit bc1cb1d1f2b996c84828ba7d81ae43b95bcceacb
+Subproject commit b40cd2308ed594e2f4f311654a4291b22c72b5ac