New review comment by sgn on void-packages repository

https://github.com/void-linux/void-packages/pull/23897#discussion_r461998777

Comment:
The argument still holds true for any POSIX conformant `printf(1)`.
Point 9. of EXTENDED DESCRIPTION https://pubs.opengroup.org/onlinepubs/9699919799/utilities/printf.html#tag_20_94_13

> The format operand shall be reused as often as necessary to satisfy the argument operands. Any extra b, c, or s conversion specifiers shall be evaluated as if a null string argument were supplied; other extra conversion specifications shall be evaluated as if a zero argument were supplied. If the format operand contains no conversion specifications and argument operands are present, the results are unspecified.