[skrifa] tthint: avoid overflow in INSTCTRL #1202
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Fuzzing caught a subtraction overflow when the provided selector value is 0. This simply moves the selector range check above the flag computation so we early out before the overflowing operation. ref https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=70426 and https://oss-fuzz.com/testcase?key=6243979511791616
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Fuzzing caught a subtraction overflow when the provided selector value is 0. This simply moves the selector range check above the flag computation so we early out before the overflowing operation.
ref https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=70426 and https://oss-fuzz.com/testcase?key=6243979511791616