grub's install-info use in scriptlets is not failsafe, fix attached. More info:
Created attachment 146122 [details]
Make install-info use in scriptlets failsafe
Fixed with ||: in 0.97-14 before I noticed this bug. Oops.
Actually, grub is not building today. So, fixed in CVS and will be fixed
whenever 0.97-14 or later is built.