Fix structs_spec so that is runnable in isolation without loading spec_helper.
Fix structs_spec so that is runnable in isolation without loading spec_helper.

ihassin/vcr,Shopify/vcr,davidbebb/vcr,ZmagoD/vcr,davidbebb/vcr,irfanah/vcr,intfrr/vcr,chriswoodrich/vcr,ZmagoD/vcr,chriswoodrich/vcr,asymmetric/vcr,allyapp/vcr,ihassin/vcr,asymmetric/vcr,mcfiredrill/vcr,myronmarston/vcr,myronmarston/vcr,nishanbose/vcr,irfanah/vcr,intfrr/vcr,mcfiredrill/vcr,nishanbose/vcr,cemo/vcr,cemo/vcr,allyapp/vcr,Shopify/vcr