Extract EqualComparator for use elsewhere

Change-Id: Ibd33c90c8935ff59d8b276061c2023fe19dd50a0
Reviewed-on: http://gerrit.dmdirc.com/1133
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Automatic-Compile: Gregory Holmes <greg@dmdirc.com>
Reviewed-by: Gregory Holmes <greg@dmdirc.com>

src/com/dmdirc/util/EqualComparator.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2006-2010 Chris Smith, Shane Mc Cormack, Gregory Holmes
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.dmdirc.util;
+
+import java.util.Comparator;
+
+/**
+ * A comparator that says any two objects are equal.
+ *
+ * @since 0.6.4
+ */
+public class EqualComparator implements Comparator<Object> {
+
+    /** {@inheritDoc} */
+    @Override
+    public int compare(final Object o1, final Object o2) {
+        return 0;
+    }
+}

src/com/dmdirc/util/ListenerList.java

@@ -23,7 +23,6 @@
 package com.dmdirc.util;
 
 import java.util.Collection;
-import java.util.Comparator;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.concurrent.ConcurrentSkipListSet;
@@ -130,19 +129,4 @@ public class ListenerList {
         }
     }
 
-    /**
-     * A comparator that says any two objects are equal.
-     *
-     * @since 0.6.4
-     */
-    protected static class EqualComparator implements Comparator<Object> {
-
-        /** {@inheritDoc} */
-        @Override
-        public int compare(final Object o1, final Object o2) {
-            return 0;
-        }
-
-    }
-
 }