Don't fetch tsd in a0{d,}alloc().

Don't fetch tsd in a0{d,}alloc(), because doing so can cause infinite
recursion on systems that require an allocated tsd wrapper.

test/unit/mq.c

@@ -85,6 +85,7 @@ TEST_END
 int
 main(void)
 {
+
 	return (test(
 	    test_mq_basic,
 	    test_mq_threaded));