fix typo

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@269492 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -139,7 +139,7 @@ public class DefaultLogger implements BuildLogger {
             err.println(lSep + "BUILD FAILED" + lSep);
 
             if (Project.MSG_VERBOSE <= msgOutputLevel ||
-                !(err instanceof BuildException)) {
+                !(error instanceof BuildException)) {
                 error.printStackTrace(err);
             }
             else {