test/tools/jar/UpdateManifest.java

@@ -141,10 +141,11 @@
         } else if (s.equals(specTitle)) {
             check(r.readLine().equals(specVersion));
         } else {
             fail("did not match specVersion nor specTitle");
         }
+        zf.close();
     }
 
     // --------------------- Convenience ---------------------------
 
     static File createTextFile(String name) throws Throwable {