Make CBlockIndex* returned by GetDepthInMainChain const.

Make the CBlockIndex* (optionally) returned by GetDepthInMainChain
const.  This prevents accidental modification.  The result is for
reading its properties rather than modifying it.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/wallet.h b/src/wallet.h
index 06706655f8..9b6895090c 100644
--- a/src/wallet.h
+++ b/src/wallet.h
@@ -474,7 +474,7 @@ struct COutputEntry
 class CMerkleTx : public CTransaction
 {
 private:
-    int GetDepthInMainChainINTERNAL(CBlockIndex* &pindexRet) const;
+    int GetDepthInMainChainINTERNAL(const CBlockIndex* &pindexRet) const;
 
 public:
     uint256 hashBlock;
@@ -519,9 +519,9 @@ public:
     // -1  : not in blockchain, and not in memory pool (conflicted transaction)
     //  0  : in memory pool, waiting to be included in a block
     // >=1 : this many blocks deep in the main chain
-    int GetDepthInMainChain(CBlockIndex* &pindexRet) const;
-    int GetDepthInMainChain() const { CBlockIndex *pindexRet; return GetDepthInMainChain(pindexRet); }
-    bool IsInMainChain() const { CBlockIndex *pindexRet; return GetDepthInMainChainINTERNAL(pindexRet) > 0; }
+    int GetDepthInMainChain(const CBlockIndex* &pindexRet) const;
+    int GetDepthInMainChain() const { const CBlockIndex *pindexRet; return GetDepthInMainChain(pindexRet); }
+    bool IsInMainChain() const { const CBlockIndex *pindexRet; return GetDepthInMainChainINTERNAL(pindexRet) > 0; }
     int GetBlocksToMaturity() const;
     bool AcceptToMemoryPool(bool fLimitFree=true, bool fRejectInsaneFee=true);
 };