getUrl($path) prints incorrect URL when prefix is defined in config

[taka-oyama]

Having the prefix defined in config causes getUrl($path) to print it twice

$config = [
    'bucket' => 'mybucket',
    'prefix' => 'icon',
];

$adapater = new GoogleCloudStorageAdapter(null, $config);
$adapter->getUrl('test.txt');
// expected: https://storage.googleapis.com/mybucket/icon/test.txt
// actual:   https://storage.googleapis.com/mybucket/icon//icon/test.txt

This is probably because prepareBaseUrl() includes the prefix when it shouldn't.

[cedricziel]

Thanks for the report and your patience! :)

[taka-oyama]

Thank you for the fix!