Automatically reorganize at startup to best known block

Given that the block tree database (chain.dat) and the active chain
database (coins.dat) are entirely separate now, it becomes legal to
swap one with another instance without affecting the other.

This commit introduces a check in the startup code that detects the
presence of a better chain in chain.dat that has not been activated
yet, and does so efficiently (in batch, while reusing the blk???.dat
files).

1 files changed, 0 insertions, 1 deletions

diff --git a/src/db.cpp b/src/db.cpp
index 06e5543b2e..5ca9ea2c34 100644
--- a/src/db.cpp
+++ b/src/db.cpp
@@ -636,7 +636,6 @@ bool LoadBlockIndex(CChainDB &chaindb)
     {
         if (pindexGenesisBlock == NULL)
             return true;
-        return error("CTxDB::LoadBlockIndex() : hashBestChain not loaded");
     }
     hashBestChain = pindexBest->GetBlockHash();
     nBestHeight = pindexBest->nHeight;