Return None from get_peer_x509

Author: JeremiahM37

wolfssl/__init__.py

@@ -850,7 +850,7 @@ def get_peer_x509(self):
         after making a successful SSL/TLS connection.
         """
         if self.native_object == _ffi.NULL:
-            return _ffi.NULL
+            return None
 
         return WolfSSLX509(self.native_object)
 
@@ -863,7 +863,7 @@ def getpeercert(self, binary_form=False):
         x509 = self.get_peer_x509()
 
         if not x509:
-            return x509
+            return None
 
         if binary_form:
             return x509.get_der()