Error: "Constant CRYPT_RSA_MODE already defined"

It happens if defined(MATH_BIGINTEGER_OPENSSL_DISABLE) && !function_exists('openssl_pkey_get_details')
Replaced "case true:" with "default:"
Merge pull request #460 from kroleg/patch-1

Error: "Constant CRYPT_RSA_MODE already defined"

* kroleg/patch-1:
  Replaced "case true:" with "default:"
  Error: "Constant CRYPT_RSA_MODE already defined"