remember to raise

Author: graingert

Lib/gzip.py

@@ -255,6 +255,7 @@ def __init__(self, filename=None, mode=None,
                     self.myfileobj.close()
             finally:
                 self.fileobj = None
+            raise
     @property
     def mtime(self):
         """Last modification time read from stream, or None"""