Fix the method signature of the alias() callback.

Author: ldx

iptc/xtables.py

@@ -386,8 +386,7 @@ class _xtables_match_v10(ct.Structure):
                 ("save", ct.CFUNCTYPE(None, ct.c_void_p,
                                       ct.POINTER(xt_entry_match))),
                 # Print match name or alias
-                ("alias", ct.CFUNCTYPE(ct.c_char_p, ct.c_void_p,
-                                       ct.POINTER(xt_entry_match))),
+                ("alias", ct.CFUNCTYPE(ct.c_char_p, ct.POINTER(xt_entry_match))),
                 # pointer to list of extra command-line options
                 ("extra_opts", ct.POINTER(option)),
 
@@ -636,8 +635,7 @@ class _xtables_target_v10(ct.Structure):
                 ("save", ct.CFUNCTYPE(None, ct.c_void_p,
                                       ct.POINTER(xt_entry_target))),
                 # Print target name or alias
-                ("alias", ct.CFUNCTYPE(ct.c_char_p, ct.c_void_p,
-                                       ct.POINTER(xt_entry_target))),
+                ("alias", ct.CFUNCTYPE(ct.c_char_p, ct.POINTER(xt_entry_target))),
                 # pointer to list of extra command-line options
                 ("extra_opts", ct.POINTER(option)),