fixup: add missing assert for CreditPool

Author: knst

src/evo/creditpool.cpp

@@ -251,6 +251,7 @@ CCreditPoolDiff::CCreditPoolDiff(CCreditPool starter, const CBlockIndex *pindex,
 }
 
 void CCreditPoolDiff::addRewardRealloced(const CAmount reward) {
+    assert(MoneyRange(reward));
     masternodeReward += reward;
 }