Fixed not initialized QVideoFrame mappedCount member
Fixed not initialized QVideoFrame mappedCount member

Change-Id: Ic0b915df120222b0bb440698c010f0e83ccce8c3
Reviewed-by: Michael Goddard <3ec82c9d770214b86c58e0ffe200ac64c3ff8da3@nokia.com>

jfaust/qtmultimedia,nezticle/qtmultimedia,nezticle/qtmultimedia,sergiusens/qtmultimedia,mer-qt/qtmultimedia,webOS-ports/qtmultimedia,jfaust/qtmultimedia,mer-qt/qtmultimedia,mer-qt/qtmultimedia,nezticle/qtmultimedia,sergiusens/qtmultimedia,webOS-ports/qtmultimedia,mer-qt/qtmultimedia,sergiusens/qtmultimedia,nezticle/qtmultimedia,sergiusens/qtmultimedia,jfaust/qtmultimedia,mer-qt/qtmultimedia,webOS-ports/qtmultimedia,jfaust/qtmultimedia,nezticle/qtmultimedia,sergiusens/qtmultimedia,webOS-ports/qtmultimedia,webOS-ports/qtmultimedia,jfaust/qtmultimedia