wire: don't allocate if udata count is 0

kcalvinalvin · kcalvinalvin · commit ed75f6076a73 · 2024-11-07T14:17:18.000+09:00
Done for equality so that reflect.DeepEqual() returns true. If we
allocate then it's not equal.
diff --git a/wire/udata.go b/wire/udata.go
@@ -247,6 +247,9 @@ func (ud *UData) DeserializeCompact(r io.Reader) error {
 	if err != nil {
 		return err
 	}
+	if udCount == 0 {
+		return nil
+	}
 	ud.LeafDatas = make([]LeafData, udCount)
 
 	for i := range ud.LeafDatas {

Original file line number	Diff line number	Diff line change
`@@ -247,6 +247,9 @@ func (ud *UData) DeserializeCompact(r io.Reader) error {`
`247`	`247`	`if err != nil {`
`248`	`248`	`return err`
`249`	`249`	`}`
	`250`	`+ if udCount == 0 {`
	`251`	`+ return nil`
	`252`	`+ }`
`250`	`253`	`ud.LeafDatas = make([]LeafData, udCount)`
`251`	`254`
`252`	`255`	`for i := range ud.LeafDatas {`