!12882 [MD][bugfix] Fix line_of_code print twice issue

From: @xiefangqi
Reviewed-by: @heleiwang,@pandoublefeng
Signed-off-by: @pandoublefeng

mindspore/ccsrc/minddata/dataset/engine/datasetops/source/cifar_op.cc

@@ -470,7 +470,7 @@ Status CifarOp::CountTotalRows(const std::string &dir, const std::string &usage,
 
       std::ifstream in(file, std::ios::binary);
 
-      CHECK_FAIL_RETURN_UNEXPECTED(in.is_open(), file + " can not be opened.");
+      CHECK_FAIL_RETURN_UNEXPECTED(in.is_open(), "Invalid file, failed to open cifar10 file: " + file);
       *count = *count + num_cifar10_records;
     }
     return Status::OK();
@@ -492,7 +492,7 @@ Status CifarOp::CountTotalRows(const std::string &dir, const std::string &usage,
         num_cifar100_records += 50000;
       }
       std::ifstream in(file, std::ios::binary);
-      CHECK_FAIL_RETURN_UNEXPECTED(in.is_open(), "Invalid file, failed to open file: " + file);
+      CHECK_FAIL_RETURN_UNEXPECTED(in.is_open(), "Invalid file, failed to open cifar100 file: " + file);
     }
     *count = num_cifar100_records;
     return Status::OK();

mindspore/core/utils/status.cc

@@ -39,6 +39,7 @@ Status::Status(enum StatusCode status_code, const std::vector<char> &status_msg)
     return;
   }
 
+  data_->err_description = CharToString(status_msg);
   data_->status_msg = CharToString(status_msg);
   data_->status_code = status_code;
 }
@@ -96,7 +97,7 @@ std::vector<char> Status::GetErrDescriptionChar() const {
   if (data_ == nullptr) {
     return std::vector<char>();
   }
-  return StringToChar(data_->status_msg);
+  return StringToChar(data_->err_description);
 }
 
 std::vector<char> Status::CodeAsCString(enum StatusCode c) {