libssh: fix -Wsign-compare in 32-bit builds by dropping a redundant check

[vszakats]

Follow-up to 8c8eeba #21214 (wrong silencing)
Follow-up to c049c37 #18989 (add redundant check)
Follow-up to c988ec9 #9328 (make check fail)
Follow-up to 44a02d2 #9324 (add original check)

[Copilot]

Pull request overview

Follow-up correction for the libssh SFTP atime/mtime quote handling to avoid -Wsign-compare failures on 32-bit Windows builds, and to ensure CI covers the affected configuration.

Changes:

• Adjusted the time_t vs UINT_MAX comparison/capping logic in myssh_in_SFTP_QUOTE_STAT() to avoid signedness warnings.
• Extended Windows CI matrix to include a MinGW32 (i686) cmake+GnuTLS+libssh build to catch 32-bit issues.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
lib/vssh/libssh.c	Updates atime/mtime quote timestamp bounds logic to avoid sign-compare on 32-bit builds.
.github/workflows/windows.yml	Adds a MinGW32 i686 “gnutls libssh” build to CI matrix for 32-bit coverage.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

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[vszakats]

D:/a/curl/curl/lib/vssh/libssh.c:1664:38: error: comparison is always false due to limited range of data type [-Werror=type-limits]
 1664 |     if(date >= 0 && (curl_off_t)date > (curl_off_t)UINT_MAX)
      |                                      ^

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

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