outelf: Error out on "section align" without value
outelf: Error out on "section align" without value

If someone specifies "section align" without =value, error out.

Reported-by: Ilya Albrekht <618886f7ba529379d90137c1cb250590273b9ee1@gmail.com>
Signed-off-by: H. Peter Anvin <8a453bad9912ffe59bc0f0b8abe03df9be19379e@linux.intel.com>

projedi/nasm,techkey/nasm,projedi/nasm,techkey/nasm,techkey/nasm,projedi/nasm,projedi/nasm,projedi/nasm,techkey/nasm,techkey/nasm