Close all input streams when unzipping, Submitted by David Schlosnagle, PR 42696

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@815599 13f79535-47bb-0310-9956-ffa450edef68

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

@@ -173,9 +173,15 @@ public class Expand extends Task {
             while (e.hasMoreElements()) {
                 empty = false;
                 ZipEntry ze = (ZipEntry) e.nextElement();
-                extractFile(fileUtils, srcF, dir, zf.getInputStream(ze),
-                            ze.getName(), new Date(ze.getTime()),
-                            ze.isDirectory(), mapper);
+                InputStream is = null;
+                try {
+                    extractFile(fileUtils, srcF, dir,
+                                is = zf.getInputStream(ze),
+                                ze.getName(), new Date(ze.getTime()),
+                                ze.isDirectory(), mapper);
+                } finally {
+                    FileUtils.close(is);
+                }
             }
             if (empty && getFailOnEmptyArchive()) {
                 throw new BuildException("archive '" + srcF + "' is empty");