-spy: flush output before waiting for more events

I'm trying to use xprop with the -spy option in a shell script, and
since it doesn't flush stdout, it's bunching up lots of modifications
into a big chunk of writes.

1 files changed, 1 insertions, 0 deletions

diff --git a/xprop.c b/xprop.c
index f1bf02a..6e2d067 100644
--- a/xprop.c
+++ b/xprop.c
@@ -1740,6 +1740,7 @@ main (int argc, char **argv)
 	
 	XSelectInput(dpy, target_win, PropertyChangeMask);
 	for (;;) {
+	    fflush(stdout);
 	    XNextEvent(dpy, &event);
 	    format = dformat = NULL;
 	    if (props) {