PHP 5.3 fix

Problem/Motivation

See patch.
webform_localization tests no longer are able to pass PHP 5.3 testing since this commit was made:

commit 2a835dcbd385446e369ac0c8a688338dbedc2a34
Author: Liam Morland <lkmorlan@uwaterloo.ca>
Date:   Fri Jan 25 17:05:44 2019 -0500

    Issue #3028472 by Liam Morland: Test webform_format_email_address()

Steps to reproduce

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Proposed resolution

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Remaining tasks

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User interface changes

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API changes

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Data model changes

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