acl: fix memory leak

If 'i != index' for all acl->entries, variable
entry leaks the storage it points to.
Signed-off-by: NGonglei <arei.gonglei@huawei.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

util/acl.c

@@ -132,7 +132,6 @@ int qemu_acl_insert(qemu_acl *acl,
                     const char *match,
                     int index)
 {
-    qemu_acl_entry *entry;
     qemu_acl_entry *tmp;
     int i = 0;
 
@@ -142,13 +141,14 @@ int qemu_acl_insert(qemu_acl *acl,
         return qemu_acl_append(acl, deny, match);
     }
 
-    entry = g_malloc(sizeof(*entry));
-    entry->match = g_strdup(match);
-    entry->deny = deny;
-
     QTAILQ_FOREACH(tmp, &acl->entries, next) {
         i++;
         if (i == index) {
+            qemu_acl_entry *entry;
+            entry = g_malloc(sizeof(*entry));
+            entry->match = g_strdup(match);
+            entry->deny = deny;
+
             QTAILQ_INSERT_BEFORE(tmp, entry, next);
             acl->nentries++;
             break;