Automagically hide the completion box when the text under cursor matches the...

Automagically hide the completion box when the text under cursor matches the only item in the completion box.

src/plugins/qmljseditor/qmljscodecompletion.cpp

@@ -796,6 +796,11 @@ void CodeCompletion::completions(QList<TextEditor::CompletionItem> *completions)
         const QString key = m_editor->textAt(m_startPosition, length);
 
         filter(m_completions, completions, key, FirstLetterCaseSensitive);
+
+        if (completions->size() == 1) {
+            if (key == completions->first().text)
+                completions->clear();
+        }
     }
 }