gigya_requirements() does not always return an array, which causes a warning error on profile installation

Profile installations check hook_requirements() for modules in a way that requires that function to always return an array.

The function gigya_requirements() can fail to return an array, and this causes the following warning:

Warning: array_merge(): Argument #2 is not an array in drupal_check_profile() (line 1166 of /var/www/nextgen/includes/install.inc).

Which then causes all further checks on hook_requirements in the loop around line 1166 to also give warnings, as the array variable being populated by array_merge() is no longer an array.