codetoanalyze/dotnet/isinst/NullDerefIsInst.cs, Void TestCodeIsInst.NullExceptionIsInst1Bad(), 3, NULL_DEREFERENCE, B5 codetoanalyze/dotnet/isinst/NullDerefIsInst.cs, Void TestCodeIsInst.NullExceptionIsInst2Bad(), 3, NULL_DEREFERENCE, B5