tool_operate: Fix CURLOPT_SSL_OPTIONS for builds without HTTPS

- Set CURLOPT_SSL_OPTIONS only if the tool enabled an SSL option.

Broken by me several days ago in 172b2beb.
https://github.com/bagder/curl/commit/172b2be#diff-70b44ee478e58d4e1ddcf9c9a73d257b

Bug: http://curl.haxx.se/mail/lib-2015-07/0119.html
Reported-by: Dan Fandrich