fix bug

mindspore/ccsrc/kernel/tbe/tbe_kernel_build.cc

@@ -725,7 +725,7 @@ std::string TbeKernelBuild::GetRealOpType(const std::string &origin_type) {
   static std::map<std::string, std::string> buffer_fussion_op_map = {{"DepthwiseConv2dNative", "DepthwiseConv2D"},
                                                                      {"TensorAdd", "Add"}};
   string result = origin_type;
-  std::map<std::string, std::string> iter = buffer_fussion_op_map.find(origin_type);
+  auto iter = buffer_fussion_op_map.find(origin_type);
   if (iter != buffer_fussion_op_map.end()) {
     result = iter->second;
   }