[Ruby] memcache-client issue

[Joe Van Dyk]

Hi,

So, playing around with memcache.  Installed the memcached-client gem.
 Started up a memcached server on the localhost.

I created a MemCache object and tried to set some data in it.  I got
an error about nil not having a sychrnoized method on line 189 of
/usr/lib/ruby/gems/1.8/gems/memcache-client-1.1.0/lib/memcache.rb.

I didn't turn on the multithread attribute.  From looking at the code,
it looks like it doesn't check to see if multithread is on before
using the @mutex variable.  I guess it should, right?