Fix for 64-bit time_t on 32-bit archs

Index: scan_engine.cc
--- scan_engine.cc.orig
+++ scan_engine.cc
@@ -2061,7 +2061,7 @@ void ultrascan_host_probe_update(UltraScanInfo *USI, H
     struct timeval tv;
 
     gettimeofday(&tv, NULL);
-    log_write(LOG_STDOUT, "%s called for machine %s state %s -> %s (trynum %d time: %ld)\n", __func__, hss->target->targetipstr(), readhoststate(hss->target->flags), readhoststate(newstate), probe->get_tryno(), (long) TIMEVAL_SUBTRACT(tv, probe->sent));
+    log_write(LOG_STDOUT, "%s called for machine %s state %s -> %s (trynum %d time: %lld)\n", __func__, hss->target->targetipstr(), readhoststate(hss->target->flags), readhoststate(newstate), probe->tryno, (time_t) TIMEVAL_SUBTRACT(tv, probe->sent));
   }
 
   ultrascan_host_pspec_update(USI, hss, probe->pspec(), newstate);
