endless loop in filtering code

[Ian Holsman]

in utl_filter.c:351
I just got into a loop where first == first->next
the filter was subreq_core

                 if (*r_filters != *c_filters) {
                     first = *r_filters;
                     while (first && (first->next != (*outf))) {
                         first = first->next;
                     }
                 }