[libvirt] [PATCH] Fix pool define crash

[Cole Robinson <crobinso redhat com>]

There's a null dereference in the storage driver when defining a pool.
Attached patch fixes it for me.

Thanks,
Cole

diff --git a/src/storage_driver.c b/src/storage_driver.c
index 2432a9a..ac5e443 100644
--- a/src/storage_driver.c
+++ b/src/storage_driver.c
@@ -546,7 +546,7 @@ storagePoolDefine(virConnectPtr conn,
         goto cleanup;
     def = NULL;
 
-    if (virStoragePoolObjSaveDef(conn, driver, pool, def) < 0) {
+    if (virStoragePoolObjSaveDef(conn, driver, pool, pool->def) < 0) {
         virStoragePoolObjRemove(&driver->pools, pool);
         goto cleanup;
     }