Text Editor: Fix handling of snippet parameter with no name
Text Editor: Fix handling of snippet parameter with no name

Problem was that typing into overlay selection of the snippet
parameter with no name ended the snippet editing. For example,
"do {$$} while ($confition$);" was unusable.

Change-Id: Ife0e68340de328a3492e242ce861f7c9dd225d7e
Reviewed-by: Leandro Melo <8f144cd741810d8c7b648cacf5b9b2f4e2ebcc1b@nokia.com>

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