Fixed notice error defined CIVICRM_SETTINGS_PATH

[pradpnayak]

When running drush cc civicrm we get Constant CIVICRM_SETTINGS_PATH already defined civicrm.drush.inc:1512

[civibot]

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[demeritcowboy]

Hi @pradpnayak can you give reproduction steps? I tried both plain and with doing export CIVICRM_SETTINGS_PATH=/path/to/civicrm.settings.php first and don't see any errors.

[demeritcowboy]

@pradpnayak Is this solved by #668 ?