ircd: Minor cleanup: simplify decl; fix comment; relax log level.

include/ircd/net/net.h

@@ -30,7 +30,7 @@ namespace ircd::net
 	IRCD_EXCEPTION(error, not_found)
 
 	// SNOMASK 'N' "net"
-	extern struct log::log log;
+	extern log::log log;
 }
 
 #include "hostport.h"

ircd/db.cc

@@ -1571,9 +1571,7 @@ ircd::db::database::column::column(database &d,
 	// Specify that index blocks should use the cache. If not, they will be
 	// pre-read into RAM by rocksdb internally. Because of the above
 	// TwoLevelIndex + partition_filters configuration on RocksDB v5.15 it's
-	// better to use pre-read except in the case of a massive database. No
-	// known deployments which exceed partitioned pre-read exist so these
-	// settings are unconditionally false.
+	// better to use pre-read except in the case of a massive database.
 	table_opts.cache_index_and_filter_blocks = true;
 	table_opts.cache_index_and_filter_blocks_with_high_priority = false;
 	table_opts.pin_top_level_index_and_filter = false;

modules/m_room_power_levels.cc

@@ -66,7 +66,7 @@ _has_power(const m::event &event,
 	};
 
 	if(!power(sender, "events", type, state_key))
-		log::error //TODO: throw
+		log::warning //TODO: throw
 		{
 			"Power violation %s in %s for %s %s,%s",
 			string_view{sender},