cpp-file instead of h-file displayed in "Headers"

1. Have a checkout of Creator's repository at v4.4.1.
2. Open the project qtcreator.pro from the repository in Creator.
3. In the "Projects" view, expand

   qtcreator
       src
           tools
               sdktool
                   Headers
                       <some path>
                           libs/utils
   

   There, you'll find the file persistentsettings.cpp.

I think this leaf of the tree should be persistentsettings.h instead.

Found by Squish test tst_openqt_creator.