fix: reduce firstStatement if secondStatement is a return statement

[hanscau]

Stepper was crashing because it was trying to reduce a return statement due to the first statement being a value. Fixed the evaluation sequence in accordance to the specs.

Reduce value if the next statement is a return statement

[coveralls]

Pull Request Test Coverage Report for Build 8124368200

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.001%) to 81.864%

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Totals
Change from base Build 8123236398:	0.001%
Covered Lines:	10353
Relevant Lines:	12219

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💛 - Coveralls