QmlProfiler: Fix memory leak
QmlProfiler: Fix memory leak

Detected by valgrind

Change-Id: I505e8dec83a0c9d3be648e43d9886debeb2a5b3b
Reviewed-by: Ulf Hermann <e18762205ac3385fdfec64f687142c888dc97458@theqtcompany.com>

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