Try to get rid of spurious failure in test_resource on the Debian buildbots by...

Try to get rid of spurious failure in test_resource on the Debian buildbots by changing the file size limit before attempting to close the file

Lib/test/test_resource.py

@@ -49,6 +49,7 @@ class ResourceTest(unittest.TestCase):
                 except ValueError:
                     limit_set = False
                 f = open(test_support.TESTFN, "wb")
+                try:
                     f.write("X" * 1024)
                     try:
                         f.write("Y")
@@ -56,9 +57,15 @@ class ResourceTest(unittest.TestCase):
                     except IOError:
                         if not limit_set:
                             raise
+                    if limit_set:
+                        # Close will attempt to flush the byte we wrote
+                        # Restore limit first to avoid getting a spurious error
+                        resource.setrlimit(resource.RLIMIT_FSIZE, (cur, max))
+                finally:
                     f.close()
                     os.unlink(test_support.TESTFN)
             finally:
+                if limit_set:
                     resource.setrlimit(resource.RLIMIT_FSIZE, (cur, max))
 
     def test_fsize_toobig(self):