BR3392200: preproc - Fix dangling paste term
BR3392200: preproc - Fix dangling paste term

In case if there a production

	{tok},{%+},{whitespace}*

the preprocessor does not delete
ending paste+spaces tokens. Fix it.

http://bugzilla.nasm.us/show_bug.cgi?id=3392200

Reported-by: KO Myung-Hun <d809576feff80a0af83d85c9236c767ab77185e8@chollian.net>
Signed-off-by: Cyrill Gorcunov <7a1ea01eee6961eb1e372e3508c2670446d086f4@gmail.com>

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