Several potential NullPointerException bugs.

[ITWOI]

Hi all,

Our tool has found several potential NPE bugs.

1. Variable md5Stream may be null due to the line 95. However, another access while( (count = md5Stream.read(bytes)) != -1 ) to the variable doesn't have the null check.

2. Similarly, null checks are inconsistent at line 55 and line 52 in method getAbderaEntry.

Thanks.

[ITWOI]

Hi, we have reported the bugs a while ago would you please take a look and confirm if they are real bugs. We have been conducting an experiment to measure the accuracy of our static checker. We would be deeply appreciated if you can provide some feedback!