Fix findbugs error

Signed-off-by: Zhao Xiaojie <[email protected]>

Author: LinuxSuRen

src/main/java/jenkins/plugins/localization/ResourceBundleFactoryImpl.java

@@ -118,6 +118,16 @@ public String getFormatStringWithoutDefaulting(Locale locale, String key) {
                 }
                 return text;
             }
+
+            @Override
+            public boolean equals(Object o) {
+                return super.equals(o);
+            }
+
+            @Override
+            public int hashCode() {
+                return super.hashCode();
+            }
         };
     }