Trailing blank lines are not printed with -nsob

Hello,

with indent 2.2.9 (and probably previous versions as well) trailing blank
lines in a file are not printed when using the -nsob option (don't swallow
optional blank lines). I personally want those lines there, and if I read the
intention of the -nsob option correctly they should be there.

example (using indent --ignore-profile -nsob):
input:
----------------------



int main () {

}




-----------------------
output:
-----------------------



int
main ()
{

}
-----------------------

Attached is a patch which will output the trailing blank lines when -nsob is
used.

Regards,
Gertjan Halkes