fix gru_unit op

src/operators/gru_unit_op.cpp

@@ -67,4 +67,4 @@ REGISTER_OPERATOR_CPU(gru_unit, ops::GruUnitOp);
 #ifdef PADDLE_MOBILE_CL
 #endif
 
-#endif
\ No newline at end of file
+#endif

src/operators/gru_unit_op.h

@@ -40,4 +40,4 @@ class GruUnitOp : public framework::OperatorWithKernel<
 }  // namespace operators
 }  // namespace paddle_mobile
 
-#endif
\ No newline at end of file
+#endif

src/operators/kernel/central-arm-func/gru_unit_arm_func.h

@@ -47,7 +47,7 @@ void GruUnitCompute(const GruUnitParam<CPU>& param) {
   gru_value.state_weight =
       const_cast<P*>(weight_data + 2 * frame_size * frame_size);
   gru_value.output_value = hidden->data<P>();
-  gru_value.prev_out_value = gru_value.output_value;
+  gru_value.prev_out_value = hidden_prev->data<P>();
   gru_value.gate_value = gate->data<P>();
   gru_value.reset_output_value = reset_hidden_prev->data<P>();
   auto active_node = math::GetActivationType(param.Activation());
@@ -59,4 +59,4 @@ void GruUnitCompute(const GruUnitParam<CPU>& param) {
 }  // namespace operators
 }  // namespace paddle_mobile
 
-#endif
\ No newline at end of file
+#endif

src/operators/kernel/gru_unit_kernel.h

@@ -32,4 +32,4 @@ class GruUnitKernel
 }  // namespace operators
 }  // namespace paddle_mobile
 
-#endif
\ No newline at end of file
+#endif