Call ReallocateCache() on each Flush()

This frees up all associated memory with the map, not only the nodes.
This is necessary in preparation for using the PoolAllocator for
CCoinsMap, which does not actually free any memory on clear().

1 files changed, 6 insertions, 3 deletions

diff --git a/src/coins.cpp b/src/coins.cpp
index 5a6ae525a7..f55932f302 100644
--- a/src/coins.cpp
+++ b/src/coins.cpp
@@ -253,9 +253,12 @@ bool CCoinsViewCache::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlockIn
 
 bool CCoinsViewCache::Flush() {
     bool fOk = base->BatchWrite(cacheCoins, hashBlock, /*erase=*/true);
-    if (fOk && !cacheCoins.empty()) {
-        /* BatchWrite must erase all cacheCoins elements when erase=true. */
-        throw std::logic_error("Not all cached coins were erased");
+    if (fOk) {
+        if (!cacheCoins.empty()) {
+            /* BatchWrite must erase all cacheCoins elements when erase=true. */
+            throw std::logic_error("Not all cached coins were erased");
+        }
+        ReallocateCache();
     }
     cachedCoinsUsage = 0;
     return fOk;