Wrong logic for notifications of node updates

I suspect the logic for the hook_nodeapi implementation to be wrong, and attach a patch here. As far as I know, the present code will never notify when the body of a node is updated. My patch should remedy this.
I checked also the head version of the module and the code is the same there, so probably my patch works there too. Please be so kind to review it and commit it.

(I patched against $Id: subscriptions.module,v 1.38.2.3.2.38 2007/03/31 15:59:36 mindless Exp $ )