Update test_interpreter.cpp

Author: henryiii

tests/test_embed/test_interpreter.cpp

@@ -138,7 +138,6 @@ TEST_CASE("Override cache") {
 
 TEST_CASE("Import error handling") {
     REQUIRE_NOTHROW(py::module_::import("widget_module"));
-
     REQUIRE_THROWS_WITH(py::module_::import("throw_exception"), "ImportError: C++ Error");
     REQUIRE_THROWS_WITH(py::module_::import("throw_error_already_set"),
                         Catch::Contains("ImportError: initialization failed"));
@@ -321,7 +320,7 @@ TEST_CASE("Restart the interpreter") {
     REQUIRE(cpp_module.attr("add")(1, 2).cast<int>() == 3);
 
     // Also verify submodules work
-    REQUIRE(module_.attr("sub").attr("add")(1, 41).cast<int>() == 42);
+    REQUIRE(cpp_module.attr("sub").attr("add")(1, 41).cast<int>() == 42);
 
     // C++ type information is reloaded and can be used in python modules.
     auto py_module = py::module_::import("test_interpreter");