internal/match: fix panic at EOF when TraceDFA > 0 #36
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With TraceDFA > 0, Scan sometimes panics by indexing a slice with a negative value. This fixes the panic. The fix is trivial: index the slice with a variable that was already adjusted non-negative for the purpose but not used.
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With TraceDFA > 0, Scan sometimes panics by indexing a slice with a
negative value. This fixes the panic.
The fix is trivial: index the slice with a variable that was already
adjusted non-negative for the purpose but not used.