Fix comparison from '==' to 'is None' for clarity

Signed-off-by: mpgn <5891788+mpgn@users.noreply.github.com>

Author: mpgn

nxc/protocols/smb.py

@@ -299,7 +299,7 @@ def print_host_info(self):
         self.logger.display(f"{self.server_os}{f' x{self.os_arch}' if self.os_arch else ''} (name:{self.hostname}) (domain:{self.targetDomain}) ({signing}) ({smbv1}){ntlm}{null_auth}{guest}")
 
         if self.args.generate_hosts_file or self.args.generate_krb5_file:
-            if self.isdc == None:
+            if self.isdc is None:
                 self.is_host_dc()
             if self.args.generate_hosts_file:
                 with open(self.args.generate_hosts_file, "a+") as host_file: