Fix failing test

Author: eliben

test/test_pssmain.py

@@ -406,6 +406,8 @@ def test_only_find_files_exclude_pattern(self):
         self.assertFoundFiles(self.of,
                 ['testdir1/subdir1/filey.c',
                  'testdir1/subdir1/filez.c'])
+
+        self.of = MockOutputFormatter('testdir1')
         self._run_main(['--cc', '-f', '--exclude-pattern', 'ea'])
         self.assertFoundFiles(self.of,
                 ['testdir1/subdir1/filey.c',