conf: convert network_conf.c to use g_auto* pointers

This was mostly boilerplate conversion, but in one case I needed to
define several differently named char* to take the place of a single
char *tmp that was re-used multiple times, and in another place there
was a single char* that was used at the toplevel of the function, and
then later used repeatedly inside a for loop, so I defined a new
separate char* inside the loop.
Signed-off-by: NLaine Stump <laine@redhat.com>
Reviewed-by: NErik Skultety <eskultet@redhat.com>

src/conf/network_conf.h

@@ -321,6 +321,7 @@ typedef enum {
 } virNetworkTaintFlags;
 
 void virNetworkDefFree(virNetworkDefPtr def);
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(virNetworkDef, virNetworkDefFree);
 
 enum {
     VIR_NETWORK_OBJ_LIST_ADD_LIVE = (1 << 0),

src/util/virxml.h

@@ -247,6 +247,7 @@ G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC(virXPathContextNodeSave, virXPathContextNodeRes
 
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(xmlDoc, xmlFreeDoc);
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(xmlXPathContext, xmlXPathFreeContext);
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(xmlBuffer, xmlBufferFree);
 
 typedef int (*virXMLNamespaceParse)(xmlXPathContextPtr ctxt, void **nsdata);
 typedef void (*virXMLNamespaceFree)(void *nsdata);