outobj: update error message
outobj: update error message

The possible sizes we can encounter are 1, 2, 4, 8... make sure we get
a proper error message.

Signed-off-by: H. Peter Anvin <8a453bad9912ffe59bc0f0b8abe03df9be19379e@linux.intel.com>

techkey/nasm,turingstudio/nasm,letolabs/nasm,turingstudio/nasm,Distrotech/nasm,projedi/nasm,Distrotech/nasm,projedi/nasm,techkey/nasm,techkey/nasm,projedi/nasm,letolabs/nasm,techkey/nasm,letolabs/nasm,Distrotech/nasm,turingstudio/nasm,Distrotech/nasm,projedi/nasm,techkey/nasm,turingstudio/nasm,projedi/nasm