[MODCLUSTER-416] mod_cluster Connected count shows improper inflation

https://issues.jboss.org/browse/MODCLUSTER-416

Trying similar fix (http://svn.apache.org/viewvc/httpd/httpd/branches/2.2.x/modules/proxy/mod_proxy_balancer.c?r1=1373320&r2=1373355&pathrev=1373355&view=patch) for mod_proxy_balancer issue (https://issues.apache.org/bugzilla/show_bug.cgi?id=48735)