fix incorrect var name

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@12782 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/applications/mod_fifo/mod_fifo.c

@@ -464,7 +464,7 @@ static void *SWITCH_THREAD_FUNC o_thread_run(switch_thread_t *thread, void *obj)
 
 	channel = switch_core_session_get_channel(session);
 
-	if ((member_wait = switch_channel_get_variable(channel, "member_wait"))) {
+	if ((member_wait = switch_channel_get_variable(channel, "fifo_member_wait")) || (member_wait = switch_channel_get_variable(channel, "member_wait"))) {
 		if (strcasecmp(member_wait, "wait") && strcasecmp(member_wait, "nowait")) {
 			member_wait = NULL;
 		}