[master] Fix endif comment

tests/tools/perfdhcp/perfdhcp.c

@@ -93,7 +93,7 @@ pselect (int nfds, fd_set *readfds, fd_set *writefds,
 	return (select(nfds, readfds, writefds, exceptfds, &my_timeout));
 }
 
-#endif /* HAVE_PSELECT */
+#endif /* !HAVE_PSELECT */
 
 /* DHCPv4 defines (to be moved/shared) */