PHP8: Avoids a warning about the undefined variable in the case file_get_contents fails#822

douglasmiller merged 1 commit intorecurly:v3-v2021-02-25recurly/recurly-client-php:v3-v2021-02-25from

Chikashi-Kato:avoid-undefined-variable-warningChikashi-Kato/recurly-client-php:avoid-undefined-variable-warningCopy head branch name to clipboard