tree a49702ba652268abf4e3bb4888db780cfd3fce04
parent e1d11f4ff17097cf8d77aa451336e20457776a1d
author bnc <bnc@google.com> 1651677101 -0700
committer Copybara-Service <copybara-worker@google.com> 1651677150 -0700

Use unsigned type as index for array.

Use uint8_t instead of char as an index for std::array<> in
buildInvalidHeaderKeyCharLookupTable() and IsInvalidHeaderKeyChar().  Envoy has
signed char, so this change is necessary to ensure that the index is within
bounds.

PiperOrigin-RevId: 446460704