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Make sure pindexWalk is non-null

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jl777
2018-03-14 21:33:11 +02:00
parent f233f9b156
commit 5298d41fae
1 changed files with 2 additions and 1 deletions
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3
src/chain.cpp
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@@ -81,7 +81,8 @@ CBlockIndex* CBlockIndex::GetAncestor(int height)
CBlockIndex* pindexWalk = this; CBlockIndex* pindexWalk = this;
int heightWalk = nHeight; int heightWalk = nHeight;
while (heightWalk > height) { while ( heightWalk > height && pindexWalk != 0 )
{
int heightSkip = GetSkipHeight(heightWalk); int heightSkip = GetSkipHeight(heightWalk);
int heightSkipPrev = GetSkipHeight(heightWalk - 1); int heightSkipPrev = GetSkipHeight(heightWalk - 1);
if (pindexWalk->pskip != NULL && if (pindexWalk->pskip != NULL &&