Memory leak in the error handling path

[dsvgithub]

If VolumeGroup() is instantiated with the name of a non-existent volume, it leaks handles.

I stumbled on this when the volume group I expected to be present has been deleted.

Volume group "localGroup" not found
Failed to initialize VG Handle.
You have a memory leak (not released memory pool):
[0xf52270] library
[0xdd8a00] config
[0xf52960] config
[0xdd88d0] dev_cache
[0xf51f30] command
[0xf52030] format1_orphan
[0xf520a0] format_instance
[0xf57c80] pool_orphan
[0xf57d80] format_instance
[0xf57ee0] text_orphan
[0xf7a5c0] format_instance
[0xef7f20] sysfs
[0xf51ee0] filter regex
Internal error: Unreleased memory pool(s) found.

I found that this got fixed when I made the following code change (call handle.close() before raising the exception):
sudo diff -u /usr/local/lib/python2.7/dist-packages/lvm2py/vg.py.1 /usr/local/lib/python2.7/dist-packages/lvm2py/vg.py
--- /usr/local/lib/python2.7/dist-packages/lvm2py/vg.py.1 2014-07-14 21:18:25.557100681 -0700
+++ /usr/local/lib/python2.7/dist-packages/lvm2py/vg.py 2014-07-14 21:18:36.837100285 -0700
@@ -57,10 +57,12 @@
handle.open()
vgh = lvm_vg_open(handle.handle, name, mode)
if not bool(vgh):

•        handle.close()
       raise HandleError("Failed to initialize VG Handle.")
   # Close the handle so we can proceed
   cl = lvm_vg_close(vgh)
   if cl != 0:
  

•        handle.close()
       raise HandleError("Failed to close VG handle after init check.")
   handle.close()
  

With this change, I see the following error only:
Volume group "localGroup" not found
Failed to initialize VG Handle.