Fix signed/unsigned mismatch in powershell_events #8225
Merged
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This fixes #8224
cosine similarity calculation in powershell_events could rollover to using negative indices with special chars in script (#8224)
Converting
auto
type tounsigned char
will force compiler to treatchr
as unsigned value which is more in accordance withsize_t
type used for indices inbuffer_freqs
.This also provides an accurate value of cosine-similarity of scripts with special characters.