[REF] Only call getACLs when contact_id is present, remove handling

[eileenmcnaughton]

Overview

Minor code cleanup

Before

getACLs called regardless if $contact_id is NULL, handling in the function for it being null or not an integer

After

getACLs only called if contact_id is not null, cast to an int

Technical Details

getACLs is called from one place in the code. Within the function there are 2 places that
handle the possibility it might be null - this moves it to the calling function
& requires contact id to be an int

Comments

[civibot]

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