added SO_REUSEADDR socket option

@@ -4,6 +4,7 @@ Sean 'Shaleh' Perry <shaleh@debian.org>  Wed,  6 Oct 1999 13:55:42 -0700
   * changed "w+" to "w" in called to pop3_mainloop():ofile = fdopen()
       why was it called with w+?  It is only ever used for writing.
   * catch EINTR in call to accept() (play nice w/ our UNIX friends)
+  * set SO_REUSEADDR on daemon's socket
 
 Sean 'Shaleh' Perry <shaleh@debian.org>  Tue,  5 Oct 1999 23:06:33 -0700
 

@@ -303,6 +303,8 @@ pop3_daemon (unsigned int maxchildren)
       syslog (LOG_ERR, "socket: %s", strerror(errno));
 	  exit (-1);
     }
+  size = 1; /* use size here to avoid making a new variable */
+  setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &size, sizeof(size));  
   size = sizeof(server);
   memset (&server, 0, size);
   server.sin_family = AF_INET;