rst: Remove xid_fail

It was required as a temp stub for MySQL restore. Now it
just spoils the code.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

cr-restore.c

@@ -899,16 +899,6 @@ err:
 	futex_abort_and_wake(&task_entries->nr_in_progress);
 }
 
-/*
- * FIXME Din't fail on xid restore failure. MySQL uses runaway
- * pgid and sid and there's nothing we can do about it yet :(
- */
-
-static void xid_fail(void)
-{
-	exit(1);
-}
-
 static void restore_sid(void)
 {
 	pid_t sid;
@@ -927,7 +917,7 @@ static void restore_sid(void)
 		sid = setsid();
 		if (sid != current->sid) {
 			pr_perror("Can't restore sid (%d)", sid);
-			xid_fail();
+			exit(1);
 		}
 	} else {
 		sid = getsid(getpid());
@@ -937,7 +927,7 @@ static void restore_sid(void)
 				return;
 			pr_err("Requested sid %d doesn't match inherited %d\n",
 					current->sid, sid);
-			xid_fail();
+			exit(1);
 		}
 	}
 }
@@ -955,7 +945,7 @@ static void restore_pgid(void)
 	pr_info("\twill call setpgid, mine pgid is %d\n", pgid);
 	if (setpgid(0, current->pgid) != 0) {
 		pr_perror("Can't restore pgid (%d/%d->%d)", current->pid.virt, pgid, current->pgid);
-		xid_fail();
+		exit(1);
 	}
 }