Description:
------------
The recent changes in 7.2 must have introduced a major regression in foreach() looping and variable assignment.

Test script:
---------------
// BROKEN NOW IN PHP7.2
        foreach ($productAttributeKeys as $type) {
            $isDefined = $this->attributeTransferCollection->has($type);
            $shouldBeTextArea = mb_strlen($value) > 255;

            if ($isDefined) {
                continue;
            }

            if ($shouldBeTextArea) {
                $inputType = self::TEXT_AREA_INPUT_TYPE;
            }
            ...
        }

// FIXED WITH: Moving continue statement up
        foreach ($productAttributeKeys as $type) {
            $isDefined = $this->attributeTransferCollection->has($type);
            if ($isDefined) {
                continue;
            }

            $shouldBeTextArea = (mb_strlen($value) > 255);

            if ($shouldBeTextArea === true) {
                $inputType = self::TEXT_AREA_INPUT_TYPE;
            }
            ...
        }

Expected result:
----------------
No notice/error on the most basic

            $shouldBeTextArea = mb_strlen($value) > 255;

            if ($isDefined) {
                continue;
            }

            if ($shouldBeTextArea) {
                $inputType = self::TEXT_AREA_INPUT_TYPE;
            }

Actual result:
--------------
When using continue, variables that must be assigned and fine are suddenly now throwing "Undefined variable: shouldBeTextArea" - this worked in all PHP versions until 7.1 incl.