celeryd_multi: Honor the newline parameter

celery/bin/celeryd_multi.py

@@ -187,7 +187,7 @@ class MultiTool(object):
         return self.retcode
 
     def say(self, m, newline=True):
-        self.fh.write('%s\n' % m if m else m)
+        self.fh.write('%s%s' % (m, '\n' if newline else ''))
 
     def names(self, argv, cmd):
         p = NamespacedOptionParser(argv)