Git: De-noise

* Remove QLatin1{String|Char} where possible
* Use initializer lists for QStringList

Change-Id: I8479f87f4fc909b5d74d854956885564209538e4
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: Tobias Hunger <tobias.hunger@qt.io>

src/plugins/git/annotationhighlighter.h

@@ -41,7 +41,7 @@ public:
 private:
     QString changeNumber(const QString &block) const override;
 
-    const QChar m_blank;
+    const QChar m_blank = ' ';
 };
 
 } // namespace Internal