Fix nightly mem

[philljj]

Description

Use XFREE for buffer that came from XMALLOC in load_file().

Fixes some free(): invalid pointer errors from mem test.

Testing:

• https://github.com/wolfSSL/testing/pull/941

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Updates test cleanup paths to use wolfSSL’s allocator/free macros consistently, addressing invalid frees in nightly memory tests.

Changes:

• Replace free() with XFREE() for buffers presumed to be allocated via XMALLOC()/load_file().
• Align test teardown with wolfSSL memory tracking to reduce free(): invalid pointer errors.

Reviewed changes

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

File	Description
tests/api/test_pkcs7.c	Switches cert_buf deallocation from free() to XFREE() in a PKCS7 decode test cleanup path.
tests/api.c	Switches serverKey deallocation from free() to XFREE() in two dual-alg test cleanup paths.

Comments suppressed due to low confidence (1)

tests/api.c:1

• XFREE's third argument (dynamic type) should match the type used when allocating serverKey (likely inside load_file()). If load_file() uses a different DYNAMIC_TYPE_* for this buffer, this change can still cause allocator/debug-tracking issues even if it compiles. Please update the DYNAMIC_TYPE_* here to exactly match the allocation site’s type (or use a dedicated load_file_free() helper to centralize the correct XFREE parameters).

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[philljj]

Retest this please.

Unclear what is cause of error.