ClangCodeModel: Fix expression to find lib dir.
ClangCodeModel: Fix expression to find lib dir.

Change-Id: I71362574d8437a7d95348c23eaf3698b7467b44d
Reviewed-by: Christian Stenger <accbb51712d7b9c4fb108439d01e716148e5f9e6@theqtcompany.com>

kuba1/qtcreator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,kuba1/qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,danimo/qt-creator,danimo/qt-creator,xianian/qt-creator,kuba1/qtcreator,Distrotech/qtcreator,AltarBeastiful/qt-creator,Distrotech/qtcreator,xianian/qt-creator,Distrotech/qtcreator,danimo/qt-creator,AltarBeastiful/qt-creator,kuba1/qtcreator,kuba1/qtcreator,danimo/qt-creator,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,danimo/qt-creator,AltarBeastiful/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,Distrotech/qtcreator,kuba1/qtcreator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,Distrotech/qtcreator,Distrotech/qtcreator,danimo/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,kuba1/qtcreator,xianian/qt-creator,AltarBeastiful/qt-creator,Distrotech/qtcreator,amyvmiwei/qt-creator,kuba1/qtcreator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,danimo/qt-creator,xianian/qt-creator,danimo/qt-creator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,xianian/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator