[igraph] community_walktrap memory leak

[Arun]

Hello.

I'm using python-igraph version 0.5.2.  When running
community_walktrap algorithm on a 75,000 node graph, there seems to be
some sort of memory leak which prevents obtaining the answer.
Couldn't seem to find a bug report for this.

import igraph
g = igraph.Graph.Read_GML('graph.gml')
x = g.community_walktrap()

When executing g.community_walktrap(), memory just rises and rises
until this message appears:

terminate called after throwing an instance of 'std::bad_alloc'
what():  std::bad_alloc
Aborted

Has anyone experienced this before with this community algorithm?  Do
you think it would help to install an SVN/CVS version (0.6?)?

Thank you very much.