Android 2.1 - Fixed NullpointerException when request timeout while down...

Fixed NullpointerException on InputStreamReader when request timeout while downloading images.

This issue has occurred on Android 2.1 in Motorola Defy.

More details can be found in http://ivokee.com/log_error/show_all

Trace:
java.lang.NullPointerException at java.io.Reader.<init>(Reader.java:65) at java.io.InputStreamReader.<init>(InputStreamReader.java:65) at com.facebook.internal.ImageDownloader.download(ImageDownloader.java:248) at com.facebook.internal.ImageDownloader.access$1(ImageDownloader.java:205) at com.facebook.internal.ImageDownloader$DownloadImageWorkItem.run(ImageDownloader.java:356) at com.facebook.internal.WorkQueue$1.run(WorkQueue.java:118) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1068) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:561) at java.lang.Thread.run(Thread.java:1096)

Thanks
Cristian Oliveira
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