Debugger: Fix std::string dumper on 64 bit
Debugger: Fix std::string dumper on 64 bit

Task-number: QTCREATORBUG-10925
Change-Id: Iec57515e8adca8bd2e638157b9c1f0d4d9310c68
Reviewed-by: Christian Stenger <accbb51712d7b9c4fb108439d01e716148e5f9e6@digia.com>

colede/qtcreator,kuba1/qtcreator,Distrotech/qtcreator,colede/qtcreator,farseerri/git_code,Distrotech/qtcreator,AltarBeastiful/qt-creator,amyvmiwei/qt-creator,omniacreator/qtcreator,amyvmiwei/qt-creator,darksylinc/qt-creator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,colede/qtcreator,xianian/qt-creator,omniacreator/qtcreator,martyone/sailfish-qtcreator,Distrotech/qtcreator,omniacreator/qtcreator,xianian/qt-creator,darksylinc/qt-creator,martyone/sailfish-qtcreator,kuba1/qtcreator,kuba1/qtcreator,colede/qtcreator,xianian/qt-creator,maui-packages/qt-creator,colede/qtcreator,omniacreator/qtcreator,Distrotech/qtcreator,farseerri/git_code,danimo/qt-creator,farseerri/git_code,farseerri/git_code,martyone/sailfish-qtcreator,danimo/qt-creator,amyvmiwei/qt-creator,omniacreator/qtcreator,darksylinc/qt-creator,kuba1/qtcreator,farseerri/git_code,darksylinc/qt-creator,darksylinc/qt-creator,amyvmiwei/qt-creator,maui-packages/qt-creator,farseerri/git_code,xianian/qt-creator,farseerri/git_code,xianian/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,darksylinc/qt-creator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,danimo/qt-creator,omniacreator/qtcreator,colede/qtcreator,amyvmiwei/qt-creator,Distrotech/qtcreator,amyvmiwei/qt-creator,xianian/qt-creator,xianian/qt-creator,darksylinc/qt-creator,farseerri/git_code,darksylinc/qt-creator,danimo/qt-creator,Distrotech/qtcreator,maui-packages/qt-creator,omniacreator/qtcreator,martyone/sailfish-qtcreator,danimo/qt-creator,maui-packages/qt-creator,danimo/qt-creator,kuba1/qtcreator,danimo/qt-creator,kuba1/qtcreator,kuba1/qtcreator,xianian/qt-creator,maui-packages/qt-creator,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,maui-packages/qt-creator,colede/qtcreator,AltarBeastiful/qt-creator,kuba1/qtcreator,xianian/qt-creator,danimo/qt-creator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,kuba1/qtcreator,danimo/qt-creator,Distrotech/qtcreator,maui-packages/qt-creator