tor/changes/bug24914

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  o Minor features (performance):
    - Avoid a needless call to malloc() when processing an incoming
      relay cell.  Closes ticket 24914.
In relay_digest_matches(), use stack instead of heap. We'd been using crypto_digest_dup() and crypto_digest_assign() here, but they aren't necessary. Instead we can just use the stack to store the previous state of the SHA_CTX and avoid a malloc/free pair. Closes ticket 24914. 2018-01-24 18:33:13 +01:00			`o Minor features (performance):`
			`- Avoid a needless call to malloc() when processing an incoming`
			`relay cell. Closes ticket 24914.`