Genesis block disk query fix

Author: CodeShark

src/main.cpp

@@ -1373,8 +1373,9 @@ bool ReadBlockFromDisk(CBlock& block, const CDiskBlockPos& pos, const Consensus:
     }
 
     // Check the header
-    if (!CheckProofOfWork(block.GetHash(), block.nBits, consensusParams))
-        return error("ReadBlockFromDisk: Errors in block header at %s", pos.ToString());
+    if (consensusParams.hashGenesisBlock != block.GetHash() &&
+        !CheckProofOfWork(block.GetHash(), block.nBits, consensusParams))
+            return error("ReadBlockFromDisk: Errors in block header at %s", pos.ToString());
 
     return true;
 }