Fix error when SSL verification is disabled.
Fix error when SSL verification is disabled.

Fixes #242

Easybring/stripe-ruby,nbrustein/stripe-ruby,stripe/stripe-ruby,hmcfletch/stripe-ruby,theicfire/stripe-ruby,gizm0duck/stripe-ruby,iloveitaly/stripe-ruby,alkesh26/stripe-ruby,OutlawAndy/stripe-ruby,thestorefront/stripe-ruby,ajporterfield/stripe-ruby,HashNuke/stripe-ruby