Add check on empty list

Signed-off-by: Charlie Getzen <charlie.getzen@procore.com>

pkg/kube/client.go

@@ -286,6 +286,10 @@ func perform(infos ResourceList, fn func(*resource.Info) error) error {
 }
 
 func batchPerform(infos Result, fn ResourceActorFunc, errs chan<- error) {
+	if len(infos) == 0 {
+		return
+	}
+
 	finished := make(chan bool, 10000)
 	kind := infos[0].Object.GetObjectKind().GroupVersionKind().Kind
 	counter := 0