refactor: Fix typo and correct template parameter inconsistency #33394

1. 
   sekomer commented at 8:05 pm on September 15, 2025: none

   • Fixed typo in merkle.cpp where variable was named ‘matchh’ instead of ‘match’
   • Fixed Hash160 to use ‘T’ instead of ‘T1’ for single template parameter, making it consistent with other single-parameter template functions like Hash

   Impact

   These are refactoring changes with no functional impact:

   • No behavior changes
   • No consensus changes
   • All existing tests pass without modification
   • Improves code maintainability and reduces cognitive load for developers
2. refactor: Fix typo and correct template parameter inconsistency

   - Fixed typo in merkle.cpp where variable was named 'matchh' instead of 'match'
   - Fixed Hash160 to use 'T' instead of 'T1' for single template parameter,
     making it consistent with other single-parameter template functions like Hash<T>

   0fd1347aea
3. DrahtBot added the label Refactoring on Sep 15, 2025
4. 
   DrahtBot commented at 8:05 pm on September 15, 2025: contributor

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/33394.

   Reviews

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   Type	Reviewers
   Concept NACK	optout21

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   LLM Linter (✨ experimental)

   Possible typos and grammar issues:

   • Compute the 160-bit hash an object. -> Compute the 160-bit hash of an object. [missing “of”, which makes the sentence ungrammatical]

   drahtbot_id_5_m

5. 
   optout21 commented at 9:01 am on September 16, 2025: none

   Concept NACK Though the changes are reasonable, I don’t think a typo fix in a variable name justifies a separate PR.
6. 
   fanquake commented at 11:04 am on September 16, 2025: member

   Thanks, however I think this code can be left as-is for now.
7. fanquake closed this on Sep 16, 2025

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Contributors
sekomer DrahtBot optout21 fanquake

Labels
Refactoring