netfilter: xtables: remove redundant casts

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 5abc276..7fcbc16 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -280,7 +280,7 @@
 	char *hookname, *chainname, *comment;
 	unsigned int rulenum = 0;
 
-	table_base = (void *)private->entries[smp_processor_id()];
+	table_base = private->entries[smp_processor_id()];
 	root = get_entry(table_base, private->hook_entry[hook]);
 
 	hookname = chainname = (char *)hooknames[hook];