debugger: fix deletion of multiple watchers
debugger: fix deletion of multiple watchers

Task-number: QTCREATORBUG-3586
Change-Id: I6b80ae7147301cd61277bd64abaee3fe8f910f38
Reviewed-by: hjk <6fac1c92f5b9c7890a04d7f8a9d8912d16355eac@ovi.com>

xianian/qt-creator,richardmg/qtcreator,ostash/qt-creator-i18n-uk,azat/qtcreator,KDE/android-qt-creator,amyvmiwei/qt-creator,kuba1/qtcreator,KDE/android-qt-creator,omniacreator/qtcreator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,malikcjm/qtcreator,KDAB/KDAB-Creator,jonnor/qt-creator,jonnor/qt-creator,kuba1/qtcreator,AltarBeastiful/qt-creator,malikcjm/qtcreator,ostash/qt-creator-i18n-uk,hdweiss/qt-creator-visualizer,maui-packages/qt-creator,colede/qtcreator,xianian/qt-creator,danimo/qt-creator,darksylinc/qt-creator,syntheticpp/qt-creator,syntheticpp/qt-creator,KDE/android-qt-creator,azat/qtcreator,omniacreator/qtcreator,jonnor/qt-creator,Distrotech/qtcreator,duythanhphan/qt-creator,amyvmiwei/qt-creator,kuba1/qtcreator,KDE/android-qt-creator,syntheticpp/qt-creator,kuba1/qtcreator,hdweiss/qt-creator-visualizer,darksylinc/qt-creator,hdweiss/qt-creator-visualizer,AltarBeastiful/qt-creator,darksylinc/qt-creator,farseerri/git_code,kuba1/qtcreator,syntheticpp/qt-creator,malikcjm/qtcreator,colede/qtcreator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,KDE/android-qt-creator,richardmg/qtcreator,farseerri/git_code,hdweiss/qt-creator-visualizer,Distrotech/qtcreator,omniacreator/qtcreator,duythanhphan/qt-creator,danimo/qt-creator,danimo/qt-creator,amyvmiwei/qt-creator,richardmg/qtcreator,ostash/qt-creator-i18n-uk,martyone/sailfish-qtcreator,Distrotech/qtcreator,xianian/qt-creator,azat/qtcreator,darksylinc/qt-creator,KDE/android-qt-creator,omniacreator/qtcreator,hdweiss/qt-creator-visualizer,Distrotech/qtcreator,colede/qtcreator,AltarBeastiful/qt-creator,duythanhphan/qt-creator,jonnor/qt-creator,farseerri/git_code,darksylinc/qt-creator,Distrotech/qtcreator,martyone/sailfish-qtcreator,Distrotech/qtcreator,maui-packages/qt-creator,duythanhphan/qt-creator,colede/qtcreator,duythanhphan/qt-creator,KDAB/KDAB-Creator,danimo/qt-creator,danimo/qt-creator,danimo/qt-creator,kuba1/qtcreator,ostash/qt-creator-i18n-uk,maui-packages/qt-creator,azat/qtcreator,martyone/sailfish-qtcreator,farseerri/git_code,darksylinc/qt-creator,jonnor/qt-creator,farseerri/git_code,ostash/qt-creator-i18n-uk,farseerri/git_code,syntheticpp/qt-creator,xianian/qt-creator,richardmg/qtcreator,azat/qtcreator,KDAB/KDAB-Creator,KDE/android-qt-creator,azat/qtcreator,colede/qtcreator,duythanhphan/qt-creator,maui-packages/qt-creator,malikcjm/qtcreator,colede/qtcreator,ostash/qt-creator-i18n-uk,xianian/qt-creator,AltarBeastiful/qt-creator,richardmg/qtcreator,AltarBeastiful/qt-creator,xianian/qt-creator,maui-packages/qt-creator,xianian/qt-creator,kuba1/qtcreator,jonnor/qt-creator,martyone/sailfish-qtcreator,richardmg/qtcreator,hdweiss/qt-creator-visualizer,AltarBeastiful/qt-creator,duythanhphan/qt-creator,syntheticpp/qt-creator,KDAB/KDAB-Creator,martyone/sailfish-qtcreator,darksylinc/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,Distrotech/qtcreator,malikcjm/qtcreator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,colede/qtcreator,KDAB/KDAB-Creator,amyvmiwei/qt-creator,darksylinc/qt-creator,omniacreator/qtcreator,malikcjm/qtcreator,danimo/qt-creator,syntheticpp/qt-creator,amyvmiwei/qt-creator,omniacreator/qtcreator,KDE/android-qt-creator,martyone/sailfish-qtcreator,danimo/qt-creator,maui-packages/qt-creator,omniacreator/qtcreator,farseerri/git_code,kuba1/qtcreator,kuba1/qtcreator,xianian/qt-creator,ostash/qt-creator-i18n-uk,danimo/qt-creator,malikcjm/qtcreator,richardmg/qtcreator,martyone/sailfish-qtcreator,KDAB/KDAB-Creator,maui-packages/qt-creator,farseerri/git_code