microtype v3.2c does not work with titletoc

Hi Robert and Javier,
the following file doesn't work anymore with microtype v3.2c (r78188)

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\documentclass{report}

\usepackage{microtype}
\usepackage{titletoc}
\titlecontents{section}[0pt]{}{}{}{}

\begin{document}
\end{document}
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! Undefined control sequence.
<argument> MT@patch@undo@@\MT@patch@name 
                                         
l.7 \begin{document}


Regards,
  Reinhard

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Reinhard Kotucha                            Phone: +49-511-3373112
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