removed warnings


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1871 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/vl.c b/vl.c
index 64fcfb4..bfc1490 100644
--- a/vl.c
+++ b/vl.c
@@ -3132,9 +3132,7 @@
 #ifdef CONFIG_SLIRP
     if (!strcmp(device, "user")) {
         if (get_param_value(buf, sizeof(buf), "hostname", p)) {
-            if (strlen(buf) > 32)
-              buf[32] = 0;
-            strcpy(slirp_hostname, buf);
+            pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
         }
         ret = net_slirp_init(vlan);
     } else