Probably because nsUrlClassifierDBServiceWorker::OpenDb failed?
> why are these methods being called when mConnection is NULL?
This is a good question. BeginUpdate propagates the error out, but is someone eating it later on or something? nsUrlClassifierStreamUpdater::DownloadUpdates seems to check the return value...
> why is mConnection NULL?
Probably because nsUrlClassifier DBServiceWorker ::OpenDb failed?
> why are these methods being called when mConnection is NULL?
This is a good question. BeginUpdate propagates the error out, but is someone eating it later on or something? nsUrlClassifier StreamUpdater: :DownloadUpdate s seems to check the return value...