Handle malloc failure in dns setcallback

FreeRTOS / FreeRTOS-Plus-TCP

FreeRTOS-Plus-TCP library repository. +TCP files only. Submoduled into https://github.com/FreeRTOS/FreeRTOS and various other repos.

MIT License

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Closed tony-josi-aws closed 2 weeks ago

tony-josi-aws commented 3 weeks ago

This PR handles malloc failure while allocating memory for DNS callback in vDNSSetCallBack API.

[x] I have tested my changes. No regression in existing tests.
[x] I have modified and/or added unit-tests to cover the code changes in this Pull Request.

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