Partially fix CVE-2014-9112, part 3/5.

From 58df4f1b44a1142bba500f980fd26806413b1728 Mon Sep 17 00:00:00 2001
From: Sergey Poznyakoff <gray@gnu.org.ua>
Date: Tue, 02 Dec 2014 09:33:29 +0000
Subject: Fix typo

---
diff --git a/src/copyin.c b/src/copyin.c
index 042cc41..264bfcb 100644
--- a/src/copyin.c
+++ b/src/copyin.c
@@ -138,7 +138,7 @@ get_link_name (struct cpio_file_stat *file_hdr, int in_file_des)
     }
   else
     {
-      link_name = xmalloc (file_hdr->c_filesize);
+      link_name = xmalloc (file_hdr->c_filesize + 1);
       tape_buffered_read (link_name, in_file_des, file_hdr->c_filesize);
       link_name[file_hdr->c_filesize] = '\0';
       tape_skip_padding (in_file_des, file_hdr->c_filesize);
--
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