add a debug log statement to increase pressure on GC and hope to avoid PR 42696

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@888888 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/Expand.java

@@ -174,6 +174,7 @@ public class Expand extends Task {
                 empty = false;
                 ZipEntry ze = (ZipEntry) e.nextElement();
                 InputStream is = null;
+                log("extracting " + ze.getName(), Project.MSG_DEBUG);
                 try {
                     extractFile(fileUtils, srcF, dir,
                                 is = zf.getInputStream(ze),