f910f554f7
The value of ret is negative (e.g., -61), but it is displayed in the help message as `%zd`, which renders as unsigned (i.e., a giant positive value). So make sure to negate the negative value before rendering it (e.g., so we display "61", not "4294967235"). Signed-off-by: Jeff Squyres <jsquyres@cisco.com>