Fix fping hanging forever on permanent sendto failure (Shawn Chu, #52)

ChangeLog

@@ -2,6 +2,7 @@ UNRELEASED
   * Allow running as non-root on Mac OS X by using non-privileged ICMP (#7)
   * Remove unnecessary IPv6 socket options
   * Fix again compatibility issue with FreeBSD (Shawn Chu)
+  * Fix fping hanging forever on permanent sendto failure (Shawn Chu)
 
 2013-10-10  David Schweikert  <david@schweikert.ch>
   * Version 3.6

src/fping.c

@@ -1464,7 +1464,9 @@ int send_ping( int s, HOST_ENTRY *h )
         
         h->num_sent++;
         h->num_sent_i++;
+        h->waiting++;
         num_pingsent++;
+        last_send_time = h->last_send_time;
         free( buffer );
         return(1);
     }