resource leak in 7.2

There was a bug in 7.1.2 that was fixed in 7.1.3 that may be back in
7.2.

I downloaded 7.2 yesterday morning and started testing it.  I left some
procedures running overnight performing random updates in a table.
Looking at task manager this morning, the three backend processes are
each consuming about 1.5e6 handles.

I'd report this to the bug system but can't get there from here this
morning.