Patch a bug in registering merged taxa

pkg/obitax/ncbitaxdump_read.go

@@ -131,7 +131,7 @@ func loadMergedTable(reader io.Reader, taxonomy *Taxonomy) int {
 		oldtaxid := strings.TrimSpace(record[0])
 		newtaxid := strings.TrimSpace(record[1])
 
-		taxonomy.AddAlias(newtaxid, oldtaxid, false)
+		taxonomy.AddAlias(oldtaxid, newtaxid, false)
 	}
 
 	return n

pkg/obitax/taxonset.go

@@ -151,7 +151,8 @@ func (set *TaxonSet) Alias(id *string, taxon *Taxon) {
 	if original == nil {
 		log.Fatalf("Original taxon %v is not part of taxon set", id)
 	}
-	set.set[id] = taxon.Node
+
+	set.set[id] = original.Node
 	set.nalias++
 }