radix_search_covered(): don't suppress COMP_NODE_PREFIX call for wider prefixes
The root node of a subtree to walk may have a prefix wider than requested.
So, we have to call COMP_NODE_PREFIX() for each nearest prefix of the subtree
in the case.
Coverage increased (+0.2%) to 90.33% when pulling a7fe55577a1f831e0265004064618aefbfad3dec on sorc1:covered into c89eb750664e28d571a90c09d481802f68487dc8 on mjschultz:master.
radix_search_covered(): don't suppress COMP_NODE_PREFIX call for wider prefixes
The root node of a subtree to walk may have a prefix wider than requested. So, we have to call COMP_NODE_PREFIX() for each nearest prefix of the subtree in the case.