Chain::SetTip return type to void

src/chain.cpp

@@ -9,17 +9,16 @@ using namespace std;
 
 // CChain implementation
 
-CBlockIndex *CChain::SetTip(CBlockIndex *pindex) {
+void CChain::SetTip(CBlockIndex *pindex) {
     if (pindex == NULL) {
         vChain.clear();
-        return NULL;
+        return;
     }
     vChain.resize(pindex->nHeight + 1);
     while (pindex && vChain[pindex->nHeight] != pindex) {
         vChain[pindex->nHeight] = pindex;
         pindex = pindex->pprev;
     }
-    return pindex;
 }
 
 CBlockLocator CChain::GetLocator(const CBlockIndex *pindex) const {