Log Message:
bind916: fix builds on Solaris derivates

A patch fixing SunOS builds was lost during a recent update, restore
it. (And s/SmartOS/SunOS/ in comment, this doesn't just affect SmartOS,
reproduced and fixed on OmniOS. This package also fails to build on
Linux, but that's another issue entirely.) Addresses PR pkg/56716 from
Russell Hansen.