[ruby/bigdecimal] Fix negative Bignum conversion
Introduced in https://github.com/ruby/bigdecimal/commit/4792a917d806
rb_absint_size return the number of bytes needed to fit the absolute integer, but negative integers need the sign, so one more bit, and potentially one more byte.
rb_absint_size
https://github.com/ruby/bigdecimal/commit/0f3d5d0eb7
Added by byroot (Jean Boussier) almost 4 years ago
[ruby/bigdecimal] Fix negative Bignum conversion
Introduced in https://github.com/ruby/bigdecimal/commit/4792a917d806
rb_absint_sizereturn the number of bytes needed to fitthe absolute integer, but negative integers need the sign, so one more
bit, and potentially one more byte.
https://github.com/ruby/bigdecimal/commit/0f3d5d0eb7