-no need to erase HashMap elements in TransportSelector - container will go out of scope
 erasing can invalidate the iterator and cause trap on shutdown

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/main@11168 ddefafc4-47db-0310-ae44-fa13212b10f2
-fix for a use-after-free bug when adding multi-headers to a list that has been copied, and then 
 one of the headers is accessed (but not necessarily parsed) - thanks to Byron Campen for this fix!

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/main@11169 ddefafc4-47db-0310-ae44-fa13212b10f2