Filename Normalizer, when locale=None fails to normalize

[dreamcatcher]

Here's a very cornerish case that needs fixing.

In plone.i18n.normalizer, if the FileNameNormalizer ends up receiving a 'None' for locale, the filename *is* normalized, but then when trying to preserve the extension the wrong variable gets used.

        # Preserve filename extensions
        base = baseNormalize(text)
        ext  = ''

        m = FILENAME_REGEX.match(text)
        if m is not None:
            base = m.groups()[0]
            ext  = m.groups()[1]

I believe that FILENAME_REGEX.match() should receive 'base' not 'text' there, as 'base' contains the normalized filename, but 'text' will contain the original, non-normalized filename if locale=None.

[dreamcatcher]

Fixed in r17239.