Various clang warning fixes

Mostly nullptr, one missing include that wasn't really missed, and a
stray ;

1 files changed, 1 insertions, 1 deletions

diff --git a/mappingtreeresultview.h b/mappingtreeresultview.h
index c999b77..df03ca7 100644
--- a/mappingtreeresultview.h
+++ b/mappingtreeresultview.h
@@ -13,7 +13,7 @@
 class MappingTreeResultView : public SmTreeView {
     Q_OBJECT
     public:
-        explicit MappingTreeResultView(QWidget *parent = 0);
+        explicit MappingTreeResultView(QWidget *parent = nullptr);
 
     signals:
         void shiftFocus();