streamthinca: fix thinko in latency_tolerance feature

gstlal-inspiral/python/streamthinca.py

@@ -278,7 +278,7 @@ class StreamThinca(object):
 		achieves more efficient CPU use at the expense of longer
 		latencies.
 		"""
-		return self.time_slide_graph.push(instrument, events, t_complete) and (t_complete - self.time_slide_graph.age() >= self.latency_tolerance)
+		return self.time_slide_graph.push(instrument, events, t_complete) and (t_complete - self.time_slide_graph.age >= self.latency_tolerance)
 
 
 	def pull(self, rankingstat, fapfar = None, zerolag_rankingstatpdf = None, coinc_sieve = None, flush = False, cluster = False, cap_singles = False, FAR_trialsfactor = 1.0, template_id_time_map = None):