Patch for Race Condition.

Hi Dave/Team,

While working on one of the assigned task, i have been noticed the race condition on object "currentObject", which is concurrently updating by "onSelRightClick" and "execSelChange" methods. Due to this, sometimes, i am getting "n" Node context menu on "m" node.

Ex:- When i right click on "server node", it is showing the "database node" popup menu options.

I have been attaching the patch along with this request, and will be awaiting for your inputs.

Thanks in advance.