player-status-entry-persist: issue each line to xmobar as soon as it …

…is available

python3 does line-based buffering only
for tty stdout, but not pipes, like xmobar

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>

bin/player-status-entry-persist.py

@@ -47,6 +47,7 @@ def paint(color, text):
 
 def show(s):
     print(s)
+    sys.stdout.flush()
 
 import xmmsclient