[PATCH] ssl-bump only bump handled CONNECT requests

This patch makes Squid only ssl-bump CONNECT requests if they are about
to be tunneled.

Currently all CONNECT requests are bumped, even if the redirectors and
adaptors have determined a 3xx, 4xx or 5xx reply should happen.

Whether Squid should be reaching this part of the code when a reply is
known is out of scope for this fix. This logic change needs to happen
anyway.

Amos

-- 
Please be using
   Current Stable Squid 2.7.STABLE9 or 3.1.12
   Beta testers wanted for 3.2.0.7 and 3.1.12.1