The logit in #L44 set shape from itself, fix this with zero_logit

Author: elias-1

seq_labeling.py

@@ -41,7 +41,7 @@ def copy_through():
 
   logit = control_flow_ops.cond(
       time < min_sequence_length, existing_logit, copy_through)
-  logit.set_shape(logit.get_shape())
+  logit.set_shape(zero_logit.get_shape())
   return logit
 
 def attention_RNN(encoder_outputs, 
@@ -279,4 +279,4 @@ def generate_sequence_output(num_encoder_symbols,
               logits, bucket_target, weights,
               softmax_loss_function=softmax_loss_function)
 
-  return logits, crossent
+  return logits, crossent