Message manager: Fix newline handling.
Message manager: Fix newline handling.

Appending it once is enough.

Change-Id: I6133e4240c3434bc4a08afdb15ad4a1f6416fee4
Reviewed-by: Eike Ziller <c142da16c73a95a82d35191bcc55b22835617128@nokia.com>

martyone/sailfish-qtcreator,Distrotech/qtcreator,syntheticpp/qt-creator,colede/qtcreator,kuba1/qtcreator,darksylinc/qt-creator,syntheticpp/qt-creator,KDE/android-qt-creator,omniacreator/qtcreator,xianian/qt-creator,martyone/sailfish-qtcreator,xianian/qt-creator,xianian/qt-creator,malikcjm/qtcreator,richardmg/qtcreator,colede/qtcreator,malikcjm/qtcreator,kuba1/qtcreator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,syntheticpp/qt-creator,richardmg/qtcreator,xianian/qt-creator,amyvmiwei/qt-creator,danimo/qt-creator,omniacreator/qtcreator,amyvmiwei/qt-creator,farseerri/git_code,syntheticpp/qt-creator,amyvmiwei/qt-creator,KDE/android-qt-creator,AltarBeastiful/qt-creator,maui-packages/qt-creator,kuba1/qtcreator,colede/qtcreator,farseerri/git_code,syntheticpp/qt-creator,kuba1/qtcreator,duythanhphan/qt-creator,xianian/qt-creator,Distrotech/qtcreator,darksylinc/qt-creator,colede/qtcreator,Distrotech/qtcreator,kuba1/qtcreator,duythanhphan/qt-creator,xianian/qt-creator,farseerri/git_code,kuba1/qtcreator,maui-packages/qt-creator,xianian/qt-creator,omniacreator/qtcreator,KDE/android-qt-creator,Distrotech/qtcreator,AltarBeastiful/qt-creator,danimo/qt-creator,richardmg/qtcreator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,KDE/android-qt-creator,darksylinc/qt-creator,malikcjm/qtcreator,syntheticpp/qt-creator,martyone/sailfish-qtcreator,Distrotech/qtcreator,darksylinc/qt-creator,duythanhphan/qt-creator,richardmg/qtcreator,martyone/sailfish-qtcreator,omniacreator/qtcreator,farseerri/git_code,AltarBeastiful/qt-creator,richardmg/qtcreator,syntheticpp/qt-creator,maui-packages/qt-creator,malikcjm/qtcreator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,darksylinc/qt-creator,colede/qtcreator,danimo/qt-creator,danimo/qt-creator,darksylinc/qt-creator,farseerri/git_code,richardmg/qtcreator,martyone/sailfish-qtcreator,kuba1/qtcreator,omniacreator/qtcreator,AltarBeastiful/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,richardmg/qtcreator,danimo/qt-creator,AltarBeastiful/qt-creator,duythanhphan/qt-creator,colede/qtcreator,kuba1/qtcreator,omniacreator/qtcreator,Distrotech/qtcreator,danimo/qt-creator,colede/qtcreator,KDE/android-qt-creator,malikcjm/qtcreator,danimo/qt-creator,kuba1/qtcreator,farseerri/git_code,omniacreator/qtcreator,KDE/android-qt-creator,maui-packages/qt-creator,maui-packages/qt-creator,danimo/qt-creator,KDE/android-qt-creator,xianian/qt-creator,duythanhphan/qt-creator,Distrotech/qtcreator,KDE/android-qt-creator,darksylinc/qt-creator,farseerri/git_code,duythanhphan/qt-creator,farseerri/git_code,malikcjm/qtcreator,amyvmiwei/qt-creator,malikcjm/qtcreator,amyvmiwei/qt-creator,maui-packages/qt-creator,AltarBeastiful/qt-creator,maui-packages/qt-creator,duythanhphan/qt-creator,danimo/qt-creator,AltarBeastiful/qt-creator,darksylinc/qt-creator