Fix wrong output for stack overflow case

[junedev]

Fixes #81

[coveralls]

Pull Request Test Coverage Report for Build 3165081693

• 5 of 5 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.1%) to 77.445%

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Totals
Change from base Build 2657142053:	0.1%
Covered Lines:	388
Relevant Lines:	501

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💛 - Coveralls