[libvirt] address 3 more dead stores

[Jim Meyering]

These changes fix two dead stores and add a comment suggesting
why *not* to remove the third one.

>From 41c778fdbaef9abf52bc4c3e278d3389d8198c34 Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering at redhat.com>
Date: Fri, 4 Sep 2009 10:55:55 +0200
Subject: [PATCH 1/3] interface_conf.c: remove a dead-store and declaration

* src/interface_conf.c (virInterfaceDefParseDhcp): Remove unused "old".
---
 src/interface_conf.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/src/interface_conf.c b/src/interface_conf.c
index a74d17e..96e0710 100644
--- a/src/interface_conf.c
+++ b/src/interface_conf.c
@@ -228,11 +228,9 @@ static int
 virInterfaceDefParseDhcp(virConnectPtr conn, virInterfaceDefPtr def,
                          xmlNodePtr dhcp, xmlXPathContextPtr ctxt) {
     char *tmp;
-    xmlNodePtr old;
     int ret = 0;

     def->proto.dhcp = 1;
-    old = ctxt->node;
     ctxt->node = dhcp;
     /* Not much to do in the current version */
     tmp = virXPathString(conn, "string(./@peerdns)", ctxt);
--
1.6.4.2.409.g85dc3


>From 10037ca58c8d93e427c480082704e7dd52424525 Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering at redhat.com>
Date: Fri, 4 Sep 2009 11:01:00 +0200
Subject: [PATCH 2/3] hash.c: remove a dead store

* src/hash.c (virHashFree): Remove useless assignment to inside_table.
---
 src/hash.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/src/hash.c b/src/hash.c
index 9308c0c..45c5747 100644
--- a/src/hash.c
+++ b/src/hash.c
@@ -231,7 +231,6 @@ virHashFree(virHashTablePtr table, virHashDeallocator f)
                 inside_table = 0;
                 iter = next;
             }
-            inside_table = 0;
         }
         VIR_FREE(table->table);
     }
--
1.6.4.2.409.g85dc3


>From 3b16e6d50d364a5307284a78a7b23d8631146663 Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering at redhat.com>
Date: Fri, 4 Sep 2009 11:20:23 +0200
Subject: [PATCH 3/3] qemu_conf.c: add a comment suggesting why we leave a dead-store

* src/qemu_conf.c (qemuBuildHostNetStr): Do not remove the type_sep=','
dead store, since not having it would be a problem if we ever add a
new attribute=VAL option.
---
 src/qemu_conf.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/qemu_conf.c b/src/qemu_conf.c
index 2c4a37d..6ffca2f 100644
--- a/src/qemu_conf.c
+++ b/src/qemu_conf.c
@@ -1269,7 +1269,7 @@ qemuBuildHostNetStr(virConnectPtr conn,
             if (net->hostnet_name) {
                 virBufferVSprintf(&buf, "%cname=%s", type_sep,
                                   net->hostnet_name);
-                type_sep = ',';
+                type_sep = ','; /* dead-store, but leave it, in case... */
             }
             if (virBufferError(&buf)) {
                 virReportOOMError(conn);
--
1.6.4.2.409.g85dc3