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0109aa62ec
When decoding a 3-byte UTF-8 code unit, redundant checks for overlong
code unit and for illegal codepoints from U+D800-DFFF were included.
Both of these conditions are caught by the line which reads:
if ((c2 & 0xC0) != 0x80 || (c == 0xF0 && c2 < 0x90) || (c == 0xF4 && c2 >= 0x90)) {
As such, there is no reason to check for the same error conditions again.
Likewise, when decoding a 4-byte UTF-8 code unit, there was a
redundant check for overlong code unit. That was already caught by the
line which reads:
if ((c2 & 0xC0) != 0x80 || (c == 0xF0 && c2 < 0x90) || (c == 0xF4 && c2 >= 0x90)) {