update ISO audio for IOS 5

[linphone] / mediastreamer2

diff --git a/mediastreamer2 b/mediastreamer2
index 3e62df330823c9efefaf314e894a6a7867f9ff76..4e245d3a00c55cc7120644adf5d97372224d2816 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit 3e62df330823c9efefaf314e894a6a7867f9ff76
+Subproject commit 4e245d3a00c55cc7120644adf5d97372224d2816