Return array on getCustomers when no records found

Needs further fix in DB class

inc/customer.class.php

@@ -56,7 +56,7 @@ class SP_Customer {
         $queryRes = DB::getResults($query, __FUNCTION__, TRUE);
 
         if ($queryRes === FALSE) {
-            return FALSE;
+            return array();
         }
 
         if ($retAssocArray) {
@@ -277,4 +277,4 @@ class SP_Customer {
 
         return $queryRes->uses;
     }
-}
+}