Text editor: Fix potential crash in the plain text editor.

Example situation: The plain text editor is displaying in-memory content and
has not been explicitly "configured". If there's an attempt to indent the text
it crashes since the indenter is invalid. This can happen if one clicks on 'Show
View Contents in Editor' within a debug session and press enter in the editor.

Reviewed-by: con

src/plugins/texteditor/plaintexteditor.cpp

@@ -63,7 +63,8 @@ PlainTextEditorEditable::PlainTextEditorEditable(PlainTextEditor *editor)
 PlainTextEditor::PlainTextEditor(QWidget *parent)
   : BaseTextEditor(parent),
   m_isMissingSyntaxDefinition(false),
-  m_ignoreMissingSyntaxDefinition(false)
+  m_ignoreMissingSyntaxDefinition(false),
+  m_indenter(new NormalIndenter) // Currently only "normal" indentation is supported.
 {
     setRevisionsVisible(true);
     setMarksVisible(true);
@@ -199,11 +200,6 @@ void PlainTextEditor::configure(const Core::MimeType &mimeType)
 
     setFontSettings(TextEditorSettings::instance()->fontSettings());
 
-    // @todo: Indentation specification through the definition files is not really being used
-    // because Kate recommends to configure indentation  through another feature. Maybe we should
-    // provide something similar in Creator? For now, only normal indentation is supported.
-    m_indenter.reset(new NormalIndenter);
-
     emit configured(editableInterface());
 }
 

src/plugins/texteditor/plaintexteditor.h

@@ -96,8 +96,8 @@ private:
 
     bool m_isMissingSyntaxDefinition;
     bool m_ignoreMissingSyntaxDefinition;
-    Utils::CommentDefinition m_commentDefinition;
     QScopedPointer<Indenter> m_indenter;
+    Utils::CommentDefinition m_commentDefinition;
 };
 
 } // namespace TextEditor