channeldb: add prefix naming to ChannelStatus enum variables

In this commit, we add a prefix naming scheme to the ChannelStatus enum
variables. We do this as it enables outside callers to more easily
identify each individual enum variable as a part of the greater
enum-like type.

channeldb/db.go

@@ -531,7 +531,7 @@ func fetchChannels(d *DB, pending, waitingClose bool) ([]*OpenChannel, error) {
 					// than Default, then it means it is
 					// waiting to be closed.
 					channelWaitingClose :=
-						channel.ChanStatus() != Default
+						channel.ChanStatus() != ChanStatusDefault
 
 					// Only include it if we requested
 					// channels with the same waitingClose