Always call _releaseWebView from -dealloc, since we could be waiting on the notification.
Always call _releaseWebView from -dealloc, since we could be waiting on the notification.

Likewise, always call _releaseWebView if the lock can be acquired in -releaseResources.

Use the lock condition instead of checking if the webview is nil in -canReleaseResources, so -releaseResources gets called more reliably.
amaxwell/fileview,bitemyapp/fileview,bitemyapp/fileview