Fix memory leak because of mock test (#800)

* Fix memory leak because of mock test

Signed-off-by: Chen Lihui <Lihui.Chen@sony.com>
Co-authored-by: Chris Lalancette <clalancette@openrobotics.org>

rcl/test/rcl/test_init.cpp

@@ -544,6 +544,8 @@ TEST_F(CLASSNAME(TestRCLFixture, RMW_IMPLEMENTATION), test_mocked_rcl_init_optio
   auto mock = mocking_utils::inject_on_return("lib:rcl", rmw_init_options_fini, RMW_RET_ERROR);
   EXPECT_EQ(RCL_RET_ERROR, rcl_init_options_fini(&init_options));
   rcl_reset_error();
+  auto mock_ok = mocking_utils::inject_on_return("lib:rcl", rmw_init_options_fini, RMW_RET_OK);
+  EXPECT_EQ(RCL_RET_OK, rcl_init_options_fini(&init_options));
 }
 
 // Mock rcl_init_options_copy to fail
@@ -559,6 +561,8 @@ TEST_F(CLASSNAME(TestRCLFixture, RMW_IMPLEMENTATION), test_rcl_init_copy_mocked_
   auto mock = mocking_utils::inject_on_return("lib:rcl", rmw_init_options_fini, RMW_RET_ERROR);
   EXPECT_EQ(RCL_RET_ERROR, rcl_init_options_copy(&init_options, &init_options_dst));
   rcl_reset_error();
+  auto mock_ok = mocking_utils::inject_on_return("lib:rcl", rmw_init_options_fini, RMW_RET_OK);
+  EXPECT_EQ(RCL_RET_OK, rcl_init_options_fini(&init_options_dst));
 }
 
 // Mock rcl_init_options_copy to fail
@@ -578,6 +582,8 @@ TEST_F(CLASSNAME(TestRCLFixture, RMW_IMPLEMENTATION), test_rcl_init_options_copy
       RCL_RET_INVALID_ARGUMENT,
       rcl_init_options_fini(&init_options_dst)) << rcl_get_error_string().str;
     rcl_reset_error();
+    auto mock_ok = mocking_utils::patch_and_return("lib:rcl", rmw_init_options_fini, RMW_RET_OK);
+    EXPECT_EQ(RCL_RET_OK, rcl_init_options_fini(&init_options_dst)) << rcl_get_error_string().str;
   });
 
   // rmw_init_options_copy error is logged