remove error check of GetBlockByHash in SaveBlock (#485)

diff --git a/protocol/block.go b/protocol/block.go
index 68e3776..92c6c11 100755 (executable)
--- a/protocol/block.go
+++ b/protocol/block.go
@@ -130,10 +130,7 @@ func (c *Chain) reorganizeChain(block *types.Block) error {
 
 // SaveBlock will validate and save block into storage
 func (c *Chain) SaveBlock(block *types.Block) error {
-       preBlock, err := c.GetBlockByHash(&block.PreviousBlockHash)
-       if err != nil {
-               return err
-       }
+       preBlock, _ := c.GetBlockByHash(&block.PreviousBlockHash)
 
        blockEnts := types.MapBlock(block)
        prevEnts := types.MapBlock(preBlock)