This addition supposedly fixed #1853, but on the face of it, it looks

like the sign is wrong, we should never get EINVAL if the deadline is
in the future.

Fix the test to make sense, and hope for the best (or a M1 :-)

Spotted by: Rasmus Villemoes

bin/varnishd/cache/cache_lck.c

@@ -221,7 +221,7 @@ Lck_CondWait(pthread_cond_t *cond, struct lock *lck, vtim_real when)
 		assert(ts.tv_nsec >= 0 && ts.tv_nsec <= 999999999);
 		errno = pthread_cond_timedwait(cond, &ilck->mtx, &ts);
 #if defined (__APPLE__)
-		if (errno == EINVAL && when > VTIM_real()) {
+		if (errno == EINVAL && when <= VTIM_real()) {
 			/*
 			 * Most kernels treat this as honest error,
 			 * recognizing that a thread has no way to