Fuzz: Prevent divide by zero in Interpolate. (#376)
Fuzz: Prevent divide by zero in Interpolate. (#376)

The checks for 0 should use an almost zero value to prevent divide by
zero errors.
libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl,libjxl/libjxl