Fixed match and extract when haystack has zero bytes.
#9163
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abyss7
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Feb 21, 2020
Fixed `match` and `extract` when haystack has zero bytes. (cherry picked from commit d1e26f5)
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Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):
Fixed the behaviour of
matchandextractfunctions when haystack has zero bytes. The behaviour was wrong when haystack was constant. This fixes #9160