cplus-dem.c tiny patch

[DJ Delorie]

Wouldn't it be better to just call setvbuf() in main, forcing the
output to be line buffered instead of block buffered?  It would more
obviously show your intentions, rather than a naked fflush in the
middle of a loop with no comments saying why it's there.

By your argument, one could also claim that c++filt should have
*unbuffered* output, so that as soon as it has a symbol to demangle,
it spits it out.  That way, you could use any delimiter, not just
newlines.