Replace stoul with ToIntegral in dbwrapper

src/dbwrapper.cpp

@@ -197,13 +197,15 @@ bool CDBWrapper::WriteBatch(CDBBatch& batch, bool fSync)
     return true;
 }
 
-size_t CDBWrapper::DynamicMemoryUsage() const {
+size_t CDBWrapper::DynamicMemoryUsage() const
+{
     std::string memory;
-    if (!pdb->GetProperty("leveldb.approximate-memory-usage", &memory)) {
+    std::optional<size_t> parsed;
+    if (!pdb->GetProperty("leveldb.approximate-memory-usage", &memory) || !(parsed = ToIntegral<size_t>(memory))) {
         LogPrint(BCLog::LEVELDB, "Failed to get approximate-memory-usage property\n");
         return 0;
     }
-    return stoul(memory);
+    return parsed.value();
 }
 
 // Prefixed with null character to avoid collisions with other keys

test/lint/lint-locale-dependence.sh

@@ -42,7 +42,6 @@ export LC_ALL=C
 # TODO: Reduce KNOWN_VIOLATIONS by replacing uses of locale dependent snprintf with strprintf.
 KNOWN_VIOLATIONS=(
     "src/bitcoin-tx.cpp.*stoul"
-    "src/dbwrapper.cpp.*stoul"
     "src/dbwrapper.cpp:.*vsnprintf"
     "src/rest.cpp:.*strtol"
     "src/test/dbwrapper_tests.cpp:.*snprintf"