MLS context can be transferred by TCP, not only by unix socket

--- cups/scheduler/client.c	2019-04-05 13:09:49.166885653 +0000

+++ cups/scheduler/client.c	2019-04-05 13:10:04.790358141 +0000

@@ -287,12 +287,9 @@

       */

       if ((con->auid = client_pid_to_auid(cr.pid)) == -1)

       {

-        httpClose(con->http);

-        cupsdLogClient(con, CUPSD_LOG_ERROR,

+        cupsdLogClient(con, CUPSD_LOG_INFO,

 		       "Unable to determine client auid for client pid=%d",

 		       cr.pid);

-        free(con);

-        return;

       }

       cupsdLogClient(con, CUPSD_LOG_INFO,

 		     "peer's pid=%d, uid=%d, gid=%d, auid=%d",

@@ -308,10 +308,8 @@

     */

     if (getpeercon(httpGetFd(con->http), &con->scon))

     {

-      httpClose(con->http);

+      cupsdSetString(&con->scon, UNKNOWN_SL);

       cupsdLogClient(con, CUPSD_LOG_ERROR, "getpeercon() failed");

-      free(con);

-      return; 

     }

     cupsdLogClient(con, CUPSD_LOG_INFO, "client context=%s", con->scon);