Applying patch in CLI-40 that avoids the test from failing sometimes on Windows

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/cli/trunk@412457 13f79535-47bb-0310-9956-ffa450edef68

Author: hen

src/test/org/apache/commons/cli2/validation/FileValidatorTest.java

@@ -150,6 +150,10 @@ private void attribute(String attr) {
                 Process proc = Runtime.getRuntime().exec(
                         "attrib.exe +" + attr + " src/test/data/.hidden.txt",
                         null, new File("."));
+                proc.waitFor();
+            } catch (InterruptedException e) {
+                System.out.println(e.getMessage());
+                e.printStackTrace();
             } catch (IOException e) {
                 System.out.println(e.getMessage());
                 e.printStackTrace();