Replace radix::search with a for loop
Replace radix::search with a for loop

Conceivably it could use descend's replacement, but it's already pretty
simple.

aclements/sv6,bowlofstew/sv6,aclements/sv6,bowlofstew/sv6,bowlofstew/sv6,aclements/sv6,aclements/sv6,bowlofstew/sv6,aclements/sv6,bowlofstew/sv6