Fix typo in model vars

python/ppo/models.py

 
         hidden_state, hidden_visual, hidden_policy, hidden_value = None, None, None, None
         if brain.number_observations > 0:
-            h_size, w_size = brain.camera_resolutions[0]['height'], brain.camera_resolutions[0]['width']
+            height_size, width_size = brain.camera_resolutions[0]['height'], brain.camera_resolutions[0]['width']
-            hidden_visual = self.create_visual_encoder(h_size, w_size, bw, h_size, 2, tf.nn.tanh)
+            hidden_visual = self.create_visual_encoder(height_size, width_size, bw, h_size, 2, tf.nn.tanh)
         if brain.state_space_size > 0:
             s_size = brain.state_space_size
             if brain.state_space_type == "continuous":
 
         hidden_state, hidden_visual, hidden = None, None, None
         if brain.number_observations > 0:
-            h_size, w_size = brain.camera_resolutions[0]['height'], brain.camera_resolutions[0]['width']
+            height_size, width_size = brain.camera_resolutions[0]['height'], brain.camera_resolutions[0]['width']
-            hidden_visual = self.create_visual_encoder(h_size, w_size, bw, h_size, 1, tf.nn.elu)[0]
+            hidden_visual = self.create_visual_encoder(height_size, width_size, bw, h_size, 1, tf.nn.elu)[0]
         if brain.state_space_size > 0:
             s_size = brain.state_space_size
             if brain.state_space_type == "continuous":