Don't rely on object, it's not always set

[malthe]

This fixes issue #443.

[malthe]

@vnmabus this is pretty old code and I honestly don't recall exactly where things are how they are, but I think accessing exc.args[1] here instead of exc.object is safe (and does the trick).

[coveralls]

Pull Request Test Coverage Report for Build 22994023202

Details

• 15 of 15 (100.0%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.02%) to 92.38%

---

Totals
Change from base Build 13355029106:	0.02%
Covered Lines:	3933
Relevant Lines:	4183

---

💛 - Coveralls