fix large contract verification

[ayrat555]

Motivation

Node js script fails with status code 7 when large smart contracts are passed

nodejs/node#28319

https://stackoverflow.com/a/47163396

7 - Internal Exception Handler Run-Time Failure: There was an uncaught exception, and the internal fatal exception handler function itself threw an error while attempting to handle it.

Changelog

• fix large contract verification

[coveralls]

Pull Request Test Coverage Report for Build b6a87835-6e65-4005-9a90-03fb904a9f9c

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.009%) to 81.006%

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Totals
Change from base Build ce5a09b3-8a48-4e69-9381-d8852ddd88a0:	0.009%
Covered Lines:	4943
Relevant Lines:	6102

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💛 - Coveralls