ToolBar: Fix height on Mac
ToolBar: Fix height on Mac

Would not contain the toolbuton's pressed shadow.

Change-Id: I989e6ec38d0632fcd4c09e1805ec3fa0133d9b93
Reviewed-by: Jens Bache-Wiig <9cea9d70b08f8210134ec5959114f72bad51ed1d@digia.com>

richardmg/qtcomponents,jfaust/qtquickcontrols,mizukusak/qtquickcontrols,drgvond/qtquickcontrols,kobolabs/qtquickcontrols,jfaust/qtquickcontrols,richardmg/qtcomponents,kobolabs/qtquickcontrols,drgvond/qtquickcontrols,kobolabs/qtquickcontrols,mizukusak/qtquickcontrols,richardmg/qtcomponents,drgvond/qtquickcontrols,jfaust/qtquickcontrols,mizukusak/qtquickcontrols