Simplify and remove few dependencies on 'errno', thanks to PEP 3151.
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index 39fe635..cf4e164 100644
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -42,7 +42,6 @@
 import os
 import shutil
 import stat
-import errno
 import time
 import struct
 import copy
@@ -2281,9 +2280,8 @@
             # Use a safe mode for the directory, the real mode is set
             # later in _extract_member().
             os.mkdir(targetpath, 0o700)
-        except EnvironmentError as e:
-            if e.errno != errno.EEXIST:
-                raise
+        except FileExistsError:
+            pass
 
     def makefile(self, tarinfo, targetpath):
         """Make a file called targetpath.