message: Fix c_api_distributed_test to use the correct function def when not injecting errors.
diff: @@ -518,7 +518,8 @@ void TestDistributedFunctionCancellation(bool inject_error) {
  TFE_TensorHandle* var_handle = TestVariable(ctx, 2.0, dev2_name);
  EXPECT_NE(var_handle, nullptr);
  - const string function_def = VariableAddFunctionWithGraphError();
  + const string function_def = inject_error ? VariableAddFunctionWithGraphError()
  + : VariableAddFunction();
  TFE_ContextAddFunctionDef(ctx, function_def.data(), function_def.size(),
  status);
  ASSERT_EQ(TF_GetCode(status), TF_OK) << TF_Message(status);
  