fixed startup bug that causes error at block 0

daemon/processing/block.go

@@ -312,7 +312,7 @@ func checkHandleReorg(height uint64, chainPrevHash string) (uint64, error) {
 			return height, errors.Prefix("error getting block@"+strconv.Itoa(int(prevHeight))+": ", err)
 		}
 		//Recursively delete blocks until they match or a reorg of depth 100 == failure of logic.
-		for prevBlock.Hash != chainPrevHash && depth < 100 {
+		for prevBlock.Hash != chainPrevHash && depth < 100 && prevHeight > 0 {
 			// Delete because it needs to be reprocessed due to reorg
 			logrus.Println("block ", prevBlock.Hash, " at height ", prevBlock.Height,
 				" to be removed due to reorg. TX-> ", prevBlock.TransactionHashes)