core: don't import genesis block in TestDAOForkRangeExtradata

The genesis block doesn't have a valid ancestor.

core/dao_test.go

@@ -62,7 +62,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
 		gspec.MustCommit(db)
 		bc, _ := NewBlockChain(db, conConf, ethash.NewFaker(), new(event.TypeMux), vm.Config{})
 
-		blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1))
+		blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()))
 		for j := 0; j < len(blocks)/2; j++ {
 			blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j]
 		}
@@ -83,7 +83,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
 		gspec.MustCommit(db)
 		bc, _ = NewBlockChain(db, proConf, ethash.NewFaker(), new(event.TypeMux), vm.Config{})
 
-		blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1))
+		blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()))
 		for j := 0; j < len(blocks)/2; j++ {
 			blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j]
 		}
@@ -105,7 +105,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
 	gspec.MustCommit(db)
 	bc, _ := NewBlockChain(db, conConf, ethash.NewFaker(), new(event.TypeMux), vm.Config{})
 
-	blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1))
+	blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()))
 	for j := 0; j < len(blocks)/2; j++ {
 		blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j]
 	}
@@ -121,7 +121,7 @@ func TestDAOForkRangeExtradata(t *testing.T) {
 	gspec.MustCommit(db)
 	bc, _ = NewBlockChain(db, proConf, ethash.NewFaker(), new(event.TypeMux), vm.Config{})
 
-	blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1))
+	blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()))
 	for j := 0; j < len(blocks)/2; j++ {
 		blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j]
 	}