Add test for #5152

pmd-java/src/test/resources/net/sourceforge/pmd/lang/java/rule/bestpractices/xml/GuardLogStatement.xml

@@ -595,8 +595,28 @@ public class GuardLogStatementTest {
 
     public void test() {
         LOG.info(
-                "Some message here : foo={}",
-                GuardLogStatementTest.MY_CONSTANT
+            "Some message here : foo={}",
+            GuardLogStatementTest.MY_CONSTANT
+        );
+    }
+}
+        ]]></code>
+    </test-code>
+
+    <test-code>
+        <description>#5152 "this" do not require guards</description>
+        <expected-problems>0</expected-problems>
+        <code><![CDATA[
+import org.apache.logging.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
+
+public class GuardLogStatementTest {
+    private static final Logger LOG = LogManager.getLogger(GuardLogStatementTest.class);
+
+    public void test() {
+        LOG.info(
+            "Some message here : foo={}",
+            this
         );
     }
 }