fix tests

Author: picnixz

Lib/hmac.py

@@ -129,7 +129,7 @@ def copy(self):
         other.digest_size = self.digest_size
         if self._hmac:
             other._hmac = self._hmac.copy()
-            if hasattr(self, '_inner'):
+            if hasattr(other, '_inner'):
                 del other._inner
             if hasattr(other, '_outer'):
                 del other._outer