testrunner: Added REGISTER_TEST. Thanks lucasmrod.

test/testmemleak.cpp

@@ -5523,4 +5523,4 @@ private:
         TODO_ASSERT_EQUALS("[test.cpp:7]: (error) Return value of allocation function f is not used.\n", "", errout.str());
     }
 };
-static TestMemleakNoVar testMemleakNoVar;
+REGISTER_TEST(TestMemleakNoVar);

test/testsizeof.cpp

@@ -488,4 +488,6 @@ private:
               "}");
         ASSERT_EQUALS("", errout.str());
     }
-};
+};
+
+REGISTER_TEST(TestSizeof);