Fix some memory leaks from static analyzer
Fix some memory leaks from static analyzer

stripe/stripe-ios,stripe/stripe-ios,stripe/stripe-ios,NewAmsterdamLabs/stripe-ios,stripe/stripe-ios,NewAmsterdamLabs/stripe-ios,NewAmsterdamLabs/stripe-ios,NewAmsterdamLabs/stripe-ios,stripe/stripe-ios,fbernardo/stripe-ios,stripe/stripe-ios,fbernardo/stripe-ios,fbernardo/stripe-ios,fbernardo/stripe-ios