bug #28 [Php70] Workaround https://bugs.php.net/63206 (nicolas-grekas)
bug #28 [Php70] Workaround https://bugs.php.net/63206 (nicolas-grekas)

This PR was merged into the 1.0-dev branch.

Discussion
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[Php70] Workaround https://bugs.php.net/63206

This ensures we never create the conditions for https://bugs.php.net/63206
I.e. never use set_error_handler's second argument.

Commits
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3aa5ed2 [Php70] Workaround https://bugs.php.net/63206

symfony/polyfill-php70