Utils: Make it possible to change internal aspect updates

... without subclassing. This is useful in situations where there
are small modifications needed for simple aspects that are themselves
exposed as members of an aspect container in a header but we
don't want to create a subclass for it.

Change-Id: I058643137c38e564072af9a2f45b1576ea058651
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/libs/utils/aspects.cpp

@@ -2739,5 +2739,4 @@ SettingsGroupNester::~SettingsGroupNester()
         theSettings->endGroup();
 }
 
-
 } // namespace Utils