bugfix(common): prevent exception body override if message is an array

[sincraianul]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/nestjs/nest/blob/master/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: #1622

Does this PR introduce a breaking change?

[ ] Yes
[x] No

[coveralls]

Pull Request Test Coverage Report for Build 1596

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.003%) to 94.425%

---

Totals
Change from base Build 1580:	0.003%
Covered Lines:	2636
Relevant Lines:	2752

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 1596

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.003%) to 94.425%

---

Totals
Change from base Build 1580:	0.003%
Covered Lines:	2636
Relevant Lines:	2752

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 1596

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.003%) to 94.425%

---

Totals
Change from base Build 1580:	0.003%
Covered Lines:	2636
Relevant Lines:	2752

---

💛 - Coveralls

[kamilmysliwiec]

Thanks! I'll publish the patch release shortly :)

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.