Fix potential null pointer access

https://sentry.io/organizations/owncloud/issues/1529161263/events/02509984b5ca42ffb3960d9c9e161414/?project=79001&statsPeriod=14d

diff --git a/src/libsync/discoveryphase.h b/src/libsync/discoveryphase.h
index c0e648ba6a2e4a273ffeecaf43fcb7ba867f5ab5..5c6eabd2dfba0ffafd0837c99e02311ddddd73a7 100644 (file)
--- a/src/libsync/discoveryphase.h
+++ b/src/libsync/discoveryphase.h
@@ -157,7 +157,7 @@ class DiscoveryPhase : public QObject
 
     friend class ProcessDirectoryJob;
 
-    ProcessDirectoryJob *_currentRootJob = nullptr;
+    QPointer<ProcessDirectoryJob> _currentRootJob;
 
     /** Maps the db-path of a deleted item to its SyncFileItem.
      *