When I reworked the 'selparams' array in commit e790adec4 to contain
pointers to 'struct selparam' rather than directly containing
structures, I missed this one case where I should have removed an &.
As a result the GTK1 signal handler that deals with clicks on the
config-pane selection treeview was getting a pointer to a pointer and
treating it as a pointer to an object. Nothing good happened.