* Small code cleanup to fix warning on compile

bwm_firewall/bwm_firewall.c

@@ -237,7 +237,7 @@ static int writeFirewall(GList *ruleList, char *filename, char load)
 			// Check if we piping to iptables aswell
 			if (piptables_restore)
 			{
-				fprintf(piptables_restore, "%s", data);
+				fprintf(piptables_restore, "%s", (char *) data);
 				// Check for IO error
 				if (ferror(piptables_restore))
 				{