smartdns: follow sysv daemon initialize steps

src/lib/conf.c

@@ -377,7 +377,7 @@ static int load_conf_file(const char *file, struct config_item *items, conf_erro
 		}
 		line_len = 0;
 
-		filed_num = sscanf(line, "%63s %8192[^\r\n]s", key, value);
+		filed_num = sscanf(line, "%63s %8191[^\r\n]s", key, value);
 		if (filed_num <= 0) {
 			continue;
 		}