> * src/pfr/pfrobjs.c, do you think count can be 0 here?

FT_UInt    power       = 1 << FT_MSB( count );

I doubt very highly that undefined behavior can mean a number between
0 and 31. So we'll get power = 0 if count = 0, which is fine too.

Every case is safe, or so it seems to me.

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