Avoid NullPointerException in FileSet.

Submitted by:	Jeff Martin <jeff.martin@synamic.co.uk>


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@267915 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/types/FileSet.java

@@ -182,6 +182,10 @@ public class FileSet {
      * Returns the directory scanner needed to access the files to process.
      */
     public DirectoryScanner getDirectoryScanner(Project p) {
+        if (dir == null) {
+            throw new BuildException("No directory specified for fileset.");
+        }
+
         /*
          * XXX remove the check here and enable the one in setDir as soon
          *     as we configure tasks at execution time.

src/testcases/org/apache/tools/ant/types/CommandlineTest.java

@@ -115,9 +115,8 @@ public class CommandlineTest extends TestCase {
         // what the Unix sh does but causes a lot of problems on DOS
         // based platforms otherwise
         s = Commandline.translateCommandline("1 2\\ 3 4");
-        assertEquals("case with quotes whitespace", 4, s.length);
-        assertEquals("Single quotes stripped, double quote included", "2\\",
-                     s[1]);
+        assertEquals("case with quoted whitespace", 4, s.length);
+        assertEquals("backslash included", "2\\", s[1]);
 
 
         // now to the expected failures