Fix the RPC debugging code so that it doesn't Oops if a task has

a null 'p_proc' procedure pointer.

net/sunrpc/sched.c

@@ -1115,11 +1115,12 @@ void rpc_show_tasks(void)
 		"-rpcwait -action- --exit--\n");
 	alltask_for_each(t, le, &all_tasks)
 		printk("%05d %04d %04x %06d %8p %6d %8p %08ld %8s %8p %8p\n",
-			t->tk_pid, t->tk_msg.rpc_proc->p_proc,
+			t->tk_pid,
+			(t->tk_msg.rpc_proc->p_proc ? t->tk_msg.rpc_proc->p_proc : -1),
 			t->tk_flags, t->tk_status,
 			t->tk_client, t->tk_client->cl_prog,
 			t->tk_rqstp, t->tk_timeout,
-			t->tk_rpcwait ? rpc_qname(t->tk_rpcwait) : " <NULL> ",
+			rpc_qname(t->tk_rpcwait),
 			t->tk_action, t->tk_exit);
 	spin_unlock(&rpc_sched_lock);
 }