Merge #18984: Remove unnecessary input blockfile SetPos

5fa067a Remove unnecessary blockfile SetPos (Tom Harding)

Pull request description:

  Nothing could have changed the position since we retrieved it a few statements earlier. This dates from commit 16d5194.

ACKs for top commit:
  LarryRuane:
    ACK 5fa067a

Tree-SHA512: 459cc7226e186c231ffb67f0613f550e8eb940f1b8933c3bc4a4e8dd519c8d5d45884e8cfd9347039dab90a093644bbbb31be063baed1c6fc7984b6cb4f17c9f

Author: MarcoFalke

src/validation.cpp

@@ -4708,7 +4708,6 @@ void LoadExternalBlockFile(const CChainParams& chainparams, FILE* fileIn, FlatFi
                 if (dbp)
                     dbp->nPos = nBlockPos;
                 blkdat.SetLimit(nBlockPos + nSize);
-                blkdat.SetPos(nBlockPos);
                 std::shared_ptr<CBlock> pblock = std::make_shared<CBlock>();
                 CBlock& block = *pblock;
                 blkdat >> block;