fix: pagination returns empty items occasionally

fixed bug that affected FetchVods: when a streamer deleted a stream it would fetch multiple iterations as it would never find the last vod, if the next iteration was items length = 0 it would exit with ErrEmpty instead of returning the already collected items

Author: Pedro J. Martínez

rcaptv/helix/helix.go

@@ -252,6 +252,10 @@ PaginationLoop:
 
 		items := parsed.Data
 		if len(items) == 0 {
+			if len(all) != 0 {
+				// no more items but we have data from previous iterations, proceed
+				break PaginationLoop
+			}
 			return nil, ErrItemsEmpty
 		}
 		for _, item := range parsed.Data {