Change switch fallthrough

[ejohnstown]

1. Remove the macro definition and checks for the value "NO_BREAK".
2. Use the wolfCrypt defined macro FALL_THROUGH instead of NO_BREAK.

[Copilot]

Pull Request Overview

This PR removes the custom NO_BREAK fall-through macro and updates all switch statements to use the FALL_THROUGH macro defined by wolfCrypt.

• Drop NO_BREAK definition from wolfssh/port.h
• Replace all NO_BREAK; usages with FALL_THROUGH; in SFTP, SCP, SSH, and internal code

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
wolfssh/port.h	Remove legacy NO_BREAK macro definitions
src/wolfsftp.c	Swap NO_BREAK for FALL_THROUGH in SFTP flows
src/wolfscp.c	Swap NO_BREAK for FALL_THROUGH in SCP flows
src/ssh.c	Swap NO_BREAK for FALL_THROUGH in SSH states
src/internal.c	Swap NO_BREAK for FALL_THROUGH in internal flows

Comments suppressed due to low confidence (2)

wolfssh/port.h:1508

• [nitpick] Consider adding a brief comment noting that NO_BREAK was removed in favor of the upstream FALL_THROUGH macro, so future maintainers understand why the old definitions are gone.

#ifndef WOLFSSH_UNUSED

wolfssh/port.h:1508

• [nitpick] Ensure that FALL_THROUGH is always defined in this translation unit (e.g. provide a no-op fallback) or include the header where it’s defined, to prevent build errors on compilers without the attribute.

#ifndef WOLFSSH_UNUSED