Added a zero arg constructor that contains an empty message.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@270249 13f79535-47bb-0310-9956-ffa450edef68

proposal/myrmidon/src/java/org/apache/myrmidon/api/TaskException.java

@@ -19,6 +19,14 @@ import org.apache.avalon.framework.CascadingException;
 public class TaskException
     extends CascadingException
 {
+    /**
+     * Basic constructor for exception that does not specify a message
+     */
+    public TaskException()
+    {
+        this( "", null );
+    }
+
     /**
      * Basic constructor with a message
      *