BR: 2196966: make the -w/-W options work again
BR: 2196966: make the -w/-W options work again

The code to parse the -w/-W options was updating warning_on[], not
warning_on_global[], but warning_on[] is reset at the beginning of
each pass (to let the warning directive work); as a result the -w/-W
options don't actually do anything at all.

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

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