Appears to fix the deadlock in reconnecting

Change-Id: I441e7d91e64f805d31caaf60dff355ce9b528ad3
Reviewed-on: http://gerrit.dmdirc.com/1279
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

src/com/dmdirc/parser/common/CallbackObject.java

@@ -37,6 +37,7 @@ import java.util.Date;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.CopyOnWriteArrayList;
 
 /**
  * CallbackObject.
@@ -50,7 +51,8 @@ public abstract class CallbackObject {
     protected final Class<? extends CallbackInterface> type;
 
     /** Arraylist for storing callback information related to the callback. */
-    protected final List<CallbackInterface> callbackInfo = new ArrayList<CallbackInterface>();
+    protected final List<CallbackInterface> callbackInfo =
+            new CopyOnWriteArrayList<CallbackInterface>();
 
     /** Reference to the Parser that owns this callback. */
     protected Parser myParser;