table: initialize the destinations when the destinations is empty

In the current implementation, the destinations map management area in the table has not been initialized even if destinations removed all.
Therefore, to explicitly initialize the destinations.

1 files changed, 6 insertions, 0 deletions

diff --git a/table/table.go b/table/table.go
index ecc067b4..5c19c2e4 100644
--- a/table/table.go
+++ b/table/table.go
@@ -122,6 +122,9 @@ func (t *Table) deleteDestByNlri(nlri bgp.AddrPrefixInterface) *Destination {
 	dest := destinations[t.tableKey(nlri)]
 	if dest != nil {
 		delete(destinations, t.tableKey(nlri))
+		if len(destinations) == 0 {
+			t.destinations = make(map[string]*Destination)
+		}
 	}
 	return dest
 }
@@ -129,6 +132,9 @@ func (t *Table) deleteDestByNlri(nlri bgp.AddrPrefixInterface) *Destination {
 func (t *Table) deleteDest(dest *Destination) {
 	destinations := t.GetDestinations()
 	delete(destinations, t.tableKey(dest.GetNlri()))
+	if len(destinations) == 0 {
+		t.destinations = make(map[string]*Destination)
+	}
 }
 
 func (t *Table) validatePath(path *Path) {