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unit-name: Fix unescaping
Invalid characters in unit names are escaped as \xFF. However, when unescaping we were looking for \FF.
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@ -272,13 +272,13 @@ char *unit_name_unescape(const char *f) {
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else if (*f == '\\') {
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int a, b;
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if ((a = unhexchar(f[1])) < 0 ||
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(b = unhexchar(f[2])) < 0) {
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/* Invalid escape code, let's take it literal then */
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if (f[1] != 'x' || (a = unhexchar(f[2])) < 0 ||
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(b = unhexchar(f[3])) < 0) {
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/* Invalid escape code, let's take it literal then */
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*(t++) = '\\';
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} else {
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*(t++) = (char) ((a << 4) | b);
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f += 2;
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f += 3;
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}
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} else
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*(t++) = *f;
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