TextEditor: Do not trigger autocomplete after user aborts...

... for the same function

Task-number: QTCREATORBUG-5748
Change-Id: Iadf5be76c24f95cf057c2112a8248bea2a9e20cf
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

src/plugins/texteditor/codeassist/genericproposalwidget.cpp

@@ -571,6 +571,7 @@ bool GenericProposalWidget::eventFilter(QObject *o, QEvent *e)
         switch (ke->key()) {
         case Qt::Key_Escape:
             abort();
+            emit explicitlyAborted();
             e->accept();
             return true;