http: return OOM errors from hsts properly - #19862
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When Curl_hsts_parse() fails with out of memory, return it to parent.
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Pull request overview
This PR fixes error handling in HTTP header parsing to properly propagate out-of-memory (OOM) errors from HSTS header parsing. When Curl_hsts_parse() encounters a memory allocation failure, the error is now returned to the caller instead of being logged and ignored. This aligns with the existing error handling pattern used for other authentication parsers (NTLM, Digest) in the same file.
- Adds early return for
CURLE_OUT_OF_MEMORYerrors fromCurl_hsts_parse() - Preserves existing behavior for non-OOM parsing errors (logged but not fatal)
- Follows established codebase pattern for critical error propagation
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When Curl_hsts_parse() fails with out of memory, return it to parent.