File libtirpc-clnt_broadcast_fix.patch of Package libtirpc

commit 8d096a0572b955835f7f64f267a29047091e0a8e
Author: Olaf Kirch <okir@suse.de>
Date:   Wed Nov 12 16:10:53 2008 +0100

    Fix a bug in clnt broadcast
    
    Before calling the replyproc function on a broadcast reply,
    we convert the server-provided address using uaddr2taddr.
    This may fail (eg if the server provided a garbage address),
    and return NULL. In this case, we should not call the replyproc
    function - because the caller expects the address netbuf to
    be a valid pointer, rather than NULL.
    
    Signed-off-by: Olaf Kirch <okir@suse.de>

diff --git a/src/clnt_bcast.c b/src/clnt_bcast.c
index aa2b8f2..899eb76 100644
--- a/src/clnt_bcast.c
+++ b/src/clnt_bcast.c
@@ -607,9 +607,11 @@ rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp,
 #endif
 						np = uaddr2taddr(
 						    fdlist[i].nconf, uaddrp);
-						done = (*eachresult)(resultsp,
-						    np, fdlist[i].nconf);
-						free(np);
+						if (np != NULL) {
+							done = (*eachresult)(resultsp,
+							    np, fdlist[i].nconf);
+							free(np);
+						}
 #ifdef PORTMAP
 					}
 #endif				/* PORTMAP */