Update util.jl

Author: DilumAluthge

test/util.jl

@@ -14,9 +14,9 @@ end
 
 function test_task_failed_exception(test_result::Test.Pass, cfg::ConfigForTestingTaskFailedException)
   observed_outer_ex = extract_test_result_value(test_result)
-  @test observed_outer_ex isa expected_outer_ex_T
+  @test observed_outer_ex isa cfg.expected_outer_ex_T
   observed_inner_ex = recursively_unwrap_ex(observed_outer_ex)
-  @test observed_inner_ex isa typeof(expected_inner_ex_INSTANCE)
-  @test observed_inner_ex == expected_inner_ex_INSTANCE
+  @test observed_inner_ex isa typeof(cfg.expected_inner_ex_INSTANCE)
+  @test observed_inner_ex == cfg.expected_inner_ex_INSTANCE
   return nothing
 end