Reduce padding in often-used structs

Reduce the padding in some often-used structs for 64bit machines.
32bit machines should also profit from most changes, but to a
lesser degree.

Change-Id: Ic4c67b94e962731de4f31164c52a372d78944ccc
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>

src/plugins/cpptools/cppcompletionassist.cpp

@@ -111,8 +111,8 @@ public:
 
 private:
     bool m_isOverloaded;
-    unsigned m_completionOperator;
     mutable QChar m_typedChar;
+    unsigned m_completionOperator;
     QSharedPointer<TypeOfExpression> m_typeOfExpression;
 };