Fix test_fcntl to run properly on systems that do not support the flags
used in the "does the value get passed in properly" test.
diff --git a/Lib/test/test_fcntl.py b/Lib/test/test_fcntl.py
index d7e409c..a45140f 100644
--- a/Lib/test/test_fcntl.py
+++ b/Lib/test/test_fcntl.py
@@ -113,7 +113,10 @@
             self.skipTest("F_NOTIFY or DN_MULTISHOT unavailable")
         fd = os.open(os.path.dirname(os.path.abspath(TESTFN)), os.O_RDONLY)
         try:
+            # This will raise OverflowError if issue1309352 is present.
             fcntl.fcntl(fd, cmd, flags)
+        except IOError:
+            pass  # Running on a system that doesn't support these flags.
         finally:
             os.close(fd)