Unkernelise streams when recording is stopped

This is needed to reset the kernel stream indexes.

fixes #1048

Change-Id: If46c4f85a752c2ed64997e6c4a44625845f4cc87
(cherry picked from commit 214f30e8cf)

daemon/recording.c

@@ -620,6 +620,8 @@ void recording_finish(struct call *call) {
 	if (!call || !call->recording)
 		return;
 
+	__call_unkernelize(call);
+
 	struct recording *recording = call->recording;
 
 	_rm(finish, call);