[#1211] neofs-cli: Fix objectIDs list reader

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

cmd/neofs-cli/internal/client/client.go

@@ -679,14 +679,13 @@ func SearchObjects(prm SearchObjectsPrm) (*SearchObjectsRes, error) {
 
 	for {
 		n, ok = rdr.Read(buf)
-		if !ok {
-			break
-		}
-
 		for i := 0; i < n; i++ {
 			v := buf[i]
 			list = append(list, &v)
 		}
+		if !ok {
+			break
+		}
 	}
 
 	_, err = rdr.Close()