eth/filters: reuse error msg for invalid block range (#28479)

eth/filters/filter.go

@@ -114,7 +114,7 @@ func (f *Filter) Logs(ctx context.Context) ([]*types.Log, error) {
 
 	// special case for pending logs
 	if beginPending && !endPending {
-		return nil, errors.New("invalid block range")
+		return nil, errInvalidBlockRange
 	}
 
 	// Short-cut if all we care about is pending logs

eth/filters/filter_test.go

@@ -353,7 +353,7 @@ func TestFilters(t *testing.T) {
 		},
 		{
 			f:   sys.NewRangeFilter(int64(rpc.PendingBlockNumber), int64(rpc.LatestBlockNumber), nil, nil),
-			err: "invalid block range",
+			err: errInvalidBlockRange.Error(),
 		},
 	} {
 		logs, err := tc.f.Logs(context.Background())