fix return type GetProcessor.php

[catsmeatman]

What does it do?

add string type to return types initialize method

Why is it needed?

method initialize GetProcessor.php can return bool or string value.

How to test

Create a inherited class of GetProcessor.php. Add return types in initialize method function initialize() :bool. Now in all cases will returned true. If add return types function initialize() :bool|true (as php DocBlock) everything will be alright.

[opengeek]

Why would initialize() return a string value?

[Mark-H]

Errors or validation that prevents a processor from continuing (i.e. it's process() method should not be run) are returned as a lexicon string. If you expand the changed code block there are a number of examples right there.

[catsmeatman]

Why would initialize() return a string value?

core/src/Revolution/Processors/Model/GetProcessor.php in line 41 or 46 return string from lexicon