zipball extract problem on mac

[rengaw83]

On a mac the extraction of a zip package (used by composer) fails:

Failed to execute (50) unzip -qq  'mksearch/public/typo3conf/ext/mksearch/b32d53b9011aaba3a906ac2a9aa4c60d' -d 'mksearch/vendor/composer/a527a523'

error:  cannot create mksearch/vendor/composer/a527a523/DMKEBUSINESSGMBH-typo3-mksearch-90c8418/tests/fixtures/txt/+.txt
        Illegal byte sequence

    The archive may contain identical file names with different capitalization (which fails on case insensitive filesystems)
    Unzip with unzip command failed, falling back to ZipArchive class

zipinfo on a mac:

$ zipinfo -s DMKEBUSINESSGMBH-typo3-mksearch-v9.5.12-0-g01af9c6.zip | grep txt | grep fixtures                                                                
drwx---     0.0 fat        0 bx stor 20-May-13 10:30 DMKEBUSINESSGMBH-typo3-mksearch-01af9c6/tests/fixtures/txt/
-rw----     0.0 fat        9 tx stor 20-May-13 10:30 DMKEBUSINESSGMBH-typo3-mksearch-01af9c6/tests/fixtures/txt/+.txt

zipinfo on a ubuntu:

$ zipinfo -s DMKEBUSINESSGMBH-typo3-mksearch-v9.5.12-0-g01af9c6.zip | grep txt | grep fixtures                                                                
drwx---     0.0 fat        0 bx stor 20-May-13 10:30 DMKEBUSINESSGMBH-typo3-mksearch-01af9c6/tests/fixtures/txt/
-rw----     0.0 fat        9 tx stor 20-May-13 10:30 DMKEBUSINESSGMBH-typo3-mksearch-01af9c6/tests/fixtures/txt/ä.txt