Fix double exception on gaierror

Closes #2581

Author: Arusekk

pwnlib/tubes/remote.py

@@ -86,7 +86,7 @@ def __init__(self, host, port,
             except socket.gaierror as e:
                 if e.errno != socket.EAI_NONAME:
                     raise
-                self.error('Could not resolve hostname: %r', host)
+                self.exception('Could not resolve hostname: %r', host)
         if self.sock:
             self.settimeout(self.timeout)
             self.lhost, self.lport = self.sock.getsockname()[:2]