MT#55283 fix for NULL selected_sfd

Fixes possible NULL dereference as selected_sfd can be NULL.

Fixes #1710

Change-Id: Ie9208d41e32278c52bec8c820435539c82343c28
(cherry picked from commit cbd217d5b1)

daemon/media_socket.c

@@ -53,7 +53,8 @@
 		else								\
 			diff_ ## x ## _ ## io = (ke)->x - ks_val;		\
 		atomic64_add(&ps->stats_ ## io.x, diff_ ## x ## _ ## io);	\
-		atomic64_add(&ps->selected_sfd->local_intf->stats.io.x, diff_ ## x ## _ ## io); \
+		if (ps->selected_sfd) \
+			atomic64_add(&ps->selected_sfd->local_intf->stats.io.x, diff_ ## x ## _ ## io); \
 		RTPE_STATS_ADD(x ## _kernel, diff_ ## x ## _ ## io);		\
 	} while (0)