* fixed break condition

Author: jingweiz

core/agents/a3cSingleProcess.py

@@ -268,7 +268,7 @@ def _rollout(self, episode_steps, episode_reward):
             self.master.frame_step.value += 1
 
             # NOTE: we put this condition inside to make sure this current rollout won't be empty
-            if self.master.train_step.value < self.master.steps:
+            if self.master.train_step.value >= self.master.steps:
                 break
 
         return episode_steps, episode_reward