Git: Modernize

* Use auto
* Use override
* Use some member initializers

Change-Id: I3ca000d1c8e4d02331d58b85e68e4d771c636b29
Reviewed-by: André Hartmann <aha_1980@gmx.de>

src/plugins/git/commitdata.h

@@ -105,10 +105,10 @@ public:
 
     CommitType commitType;
     QString amendSHA1;
-    QTextCodec *commitEncoding;
+    QTextCodec *commitEncoding = nullptr;
     GitSubmitEditorPanelInfo panelInfo;
     GitSubmitEditorPanelData panelData;
-    bool enablePush;
+    bool enablePush = false;
 
     QList<StateFilePair> files;