Fixed #26395 -- Skipped the CryptPasswordHasher tests on platforms with a dummy crypt module.

tests/auth_tests/test_hashers.py

@@ -19,6 +19,10 @@ try:
     import crypt
 except ImportError:
     crypt = None
+else:
+    # On some platforms (e.g. OpenBSD), crypt.crypt() always return None.
+    if crypt.crypt('', '') is None:
+        crypt = None
 
 try:
     import bcrypt