add original exception to new buildexception for

projectHelper#addLocationToBuildException(
PR: 25777
Obtained from: Jesse Glick


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@275849 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/ProjectHelper.java

@@ -569,10 +569,10 @@ public class ProjectHelper {
             + ex.getLocation().toString()
             + ex.getMessage();
         if (newLocation == null) {
-            return new BuildException(errorMessage);
+            return new BuildException(errorMessage, ex);
         } else {
             return new BuildException(
-                errorMessage, newLocation);
+                errorMessage, ex, newLocation);
         }
     }
 }