listFiles() can return null if the File its called on is not a directory,

or if any unspecified error or hiccup occurs within the acidic innards of
the JVM. If that's the case, we probably will fail deleting the directory
itself below these lines, but it's better than throwing a NPE and
sticking a fork in everything.


git-svn-id: https://samskivert.googlecode.com/svn/trunk@1736 6335cc39-0255-0410-8fd6-9bcaacd3b74c

projects/samskivert/src/java/com/samskivert/util/FileUtil.java

@@ -49,8 +49,10 @@ public class FileUtil
     {
         if (file.isDirectory()) {
             File[] files = file.listFiles();
-            for (int ii = 0; ii < files.length; ii++) {
-                recursiveWipe(files[ii], true);
+            if (files != null) {
+                for (int ii = 0; ii < files.length; ii++) {
+                    recursiveWipe(files[ii], true);
+                }
             }
         }
         if (wipeMe) {