Use data member precision_mode_ (fix compilation issue)
diff --git a/tensorflow/compiler/tf2tensorrt/convert/convert_nodes.cc b/tensorflow/compiler/tf2tensorrt/convert/convert_nodes.cc
index 440fce0..0a84041 100644
--- a/tensorflow/compiler/tf2tensorrt/convert/convert_nodes.cc
+++ b/tensorflow/compiler/tf2tensorrt/convert/convert_nodes.cc
@@ -1416,9 +1416,9 @@
   TrtUniquePtrType<nvinfer1::IBuilderConfig> builder_config(
       trt_builder_->createBuilderConfig());
   builder_config->setMaxWorkspaceSize(max_workspace_size_bytes);
-  if (precision_mode == TrtPrecisionMode::FP16) {
+  if (precision_mode_ == TrtPrecisionMode::FP16) {
     builder_config->setFlag(nvinfer1::BuilderFlag::kFP16);
-  } else if (precision_mode == TrtPrecisionMode::INT8) {
+  } else if (precision_mode_ == TrtPrecisionMode::INT8) {
     builder_config->setFlag(nvinfer1::BuilderFlag::kFP16);
     builder_config->setFlag(nvinfer1::BuilderFlag::kINT8);
     if (use_calibration) {