Merge branch 'dev_multicall'

[linphone] / mediastreamer2

diff --git a/mediastreamer2 b/mediastreamer2
index 332d79209b333bd8ded5b16a7b9dcfe2c0aedc63..ea7ca97aaaa6f191dfec112f137fb048a4ef2139 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit 332d79209b333bd8ded5b16a7b9dcfe2c0aedc63
+Subproject commit ea7ca97aaaa6f191dfec112f137fb048a4ef2139