Update testclass.cpp

Author: chrchr-github

test/testclass.cpp

@@ -6826,7 +6826,7 @@ class TestClass : public TestFixture {
                    "    bool has(int i) { return m.find(i) != m.end(); }\n"
                    "    std::map<int, int> m;\n"
                    "};\n");
-        ASSERT_EQUALS("[test.cpp.2:10]: (style, inconclusive) Technically the member function 'S::has' can be const. [functionConst]\n",
+        ASSERT_EQUALS("[test.cpp:2:10]: (style, inconclusive) Technically the member function 'S::has' can be const. [functionConst]\n",
                       errout_str());
     }