[clang support] Change pointer type to volatile in utils crash handler

[shadiramadan]

Description

Without the volatile keyword clang complains- volatile ensures this statement is not optimized out. My builds succeed after this change.

Clang error (before volatile keyword)

espressif__esp_hosted/common/utils/esp_hosted_cli.c:203:2: error: indirection of non-volatile null pointer will be deleted, not trap [-Werror,-Wnull-dereference]
  203 |         *(int *) (0x0) = 0;

Testing

Passing gcc/clang builds.

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Checklist

Before submitting a Pull Request, please ensure the following:

• 🚨 This PR does not introduce breaking changes.
• All CI checks (GH Actions) pass.
• Documentation is updated as needed.
• Tests are updated or added as necessary.
• Code is well-commented, especially in complex areas.
• Git history is clean — commits are squashed to the minimum necessary.

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[Copilot]

Pull Request Overview

This PR fixes a clang compiler warning by adding the volatile keyword to a null pointer dereference in a crash handler function. The change ensures that the intentional crash statement is not optimized away by the compiler.

• Adds volatile qualifier to the null pointer cast in the crash handler
• Resolves clang compiler error -Werror,-Wnull-dereference
• Maintains the intentional crash behavior while satisfying compiler requirements

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