MT#56374 cap sleep time under ASAN

We don't have functioning thread cancellation under ASAN. Make sure our
timer threads don't sleep too long so that the tests don't time out.

Change-Id: Iced6396fc500942ae64dfe8d8a5fb81c6a5e9619

daemon/helpers.c

@@ -316,6 +316,9 @@ static void thread_looper_helper(void *fp) {
 	g_slice_free1(sizeof(*lhp), lhp);
 
 	long long interval_us = lh.interval_us;
+#ifdef ASAN_BUILD
+	interval_us = MIN(interval_us, 100000);
+#endif
 	static const long long warn_limit_pct = 20; // 20%
 	long long warn_limit_us = interval_us * warn_limit_pct / 100;