Fixed bad optional access, fixes #450

src/libs/services/scanner/impl/ScannerService.cpp

@@ -295,18 +295,19 @@ namespace lms::scanner
             LMS_LOG(DBUPDATER, DEBUG, "Completed scan step '" << scanStep->getStepName() << "'");
         }
 
+        {
+            std::unique_lock lock{ _statusMutex };
+
+            _curState = State::NotScheduled;
+            _currentScanStepStats.reset(); // must be sync with _curState
+        }
+
         LMS_LOG(DBUPDATER, INFO, "Scan " << (_abortScan ? "aborted" : "complete") << ". Changes = " << stats.nbChanges() << " (added = " << stats.additions << ", removed = " << stats.deletions << ", updated = " << stats.updates << "), Not changed = " << stats.skips << ", Scanned = " << stats.scans << " (errors = " << stats.errors.size() << "), features fetched = " << stats.featuresFetched << ",  duplicates = " << stats.duplicates.size());
 
         if (!_abortScan)
         {
             stats.stopTime = Wt::WDateTime::currentDateTime();
-            {
+          
-                std::unique_lock lock{ _statusMutex };
-
-                _lastCompleteScanStats = stats;
-                _currentScanStepStats.reset();
-            }
-
             LMS_LOG(DBUPDATER, DEBUG, "Scan not aborted, scheduling next scan!");
             scheduleNextScan();
 
@@ -315,11 +316,6 @@ namespace lms::scanner
         else
         {
             LMS_LOG(DBUPDATER, DEBUG, "Scan aborted, not scheduling next scan!");
-
-            std::unique_lock lock{ _statusMutex };
-
-            _curState = State::NotScheduled;
-            _currentScanStepStats.reset();
         }
     }